Adding upstream version 0.0~git20221206.8b7148f.upstream/0.0_git20221206.8b7148f

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 1847 insertions, 0 deletions

diff --git a/libc-top-half/musl/include/netinet/ether.h b/libc-top-half/musl/include/netinet/ether.h
new file mode 100644
index 0000000..eec7e53
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/ether.h
@@ -0,0 +1,22 @@
+#ifndef _NETINET_ETHER_H
+#define _NETINET_ETHER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <netinet/if_ether.h>
+
+char *ether_ntoa (const struct ether_addr *);
+struct ether_addr *ether_aton (const char *);
+char *ether_ntoa_r (const struct ether_addr *, char *);
+struct ether_addr *ether_aton_r (const char *, struct ether_addr *);
+int ether_line(const char *, struct ether_addr *, char *);
+int ether_ntohost(char *, const struct ether_addr *);
+int ether_hostton(const char *, struct ether_addr *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/icmp6.h b/libc-top-half/musl/include/netinet/icmp6.h
new file mode 100644
index 0000000..01269e7
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/icmp6.h
@@ -0,0 +1,305 @@
+#ifndef _NETINET_ICMP6_H
+#define _NETINET_ICMP6_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+
+#define ICMP6_FILTER 1
+
+#define ICMP6_FILTER_BLOCK		1
+#define ICMP6_FILTER_PASS		2
+#define ICMP6_FILTER_BLOCKOTHERS	3
+#define ICMP6_FILTER_PASSONLY		4
+
+struct icmp6_filter {
+	uint32_t icmp6_filt[8];
+};
+
+struct icmp6_hdr {
+	uint8_t     icmp6_type;
+	uint8_t     icmp6_code;
+	uint16_t    icmp6_cksum;
+	union {
+		uint32_t  icmp6_un_data32[1];
+		uint16_t  icmp6_un_data16[2];
+		uint8_t   icmp6_un_data8[4];
+	} icmp6_dataun;
+};
+
+#define icmp6_data32    icmp6_dataun.icmp6_un_data32
+#define icmp6_data16    icmp6_dataun.icmp6_un_data16
+#define icmp6_data8     icmp6_dataun.icmp6_un_data8
+#define icmp6_pptr      icmp6_data32[0]
+#define icmp6_mtu       icmp6_data32[0]
+#define icmp6_id        icmp6_data16[0]
+#define icmp6_seq       icmp6_data16[1]
+#define icmp6_maxdelay  icmp6_data16[0]
+
+#define ICMP6_DST_UNREACH             1
+#define ICMP6_PACKET_TOO_BIG          2
+#define ICMP6_TIME_EXCEEDED           3
+#define ICMP6_PARAM_PROB              4
+
+#define ICMP6_INFOMSG_MASK  0x80
+
+#define ICMP6_ECHO_REQUEST          128
+#define ICMP6_ECHO_REPLY            129
+#define MLD_LISTENER_QUERY          130
+#define MLD_LISTENER_REPORT         131
+#define MLD_LISTENER_REDUCTION      132
+
+#define ICMP6_DST_UNREACH_NOROUTE     0
+#define ICMP6_DST_UNREACH_ADMIN       1
+#define ICMP6_DST_UNREACH_BEYONDSCOPE 2
+#define ICMP6_DST_UNREACH_ADDR        3
+#define ICMP6_DST_UNREACH_NOPORT      4
+
+#define ICMP6_TIME_EXCEED_TRANSIT     0
+#define ICMP6_TIME_EXCEED_REASSEMBLY  1
+
+#define ICMP6_PARAMPROB_HEADER        0
+#define ICMP6_PARAMPROB_NEXTHEADER    1
+#define ICMP6_PARAMPROB_OPTION        2
+
+#define ICMP6_FILTER_WILLPASS(type, filterp) \
+	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0)
+
+#define ICMP6_FILTER_WILLBLOCK(type, filterp) \
+	((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0)
+
+#define ICMP6_FILTER_SETPASS(type, filterp) \
+	((((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))))
+
+#define ICMP6_FILTER_SETBLOCK(type, filterp) \
+	((((filterp)->icmp6_filt[(type) >> 5]) |=  (1 << ((type) & 31))))
+
+#define ICMP6_FILTER_SETPASSALL(filterp) \
+	memset (filterp, 0, sizeof (struct icmp6_filter));
+
+#define ICMP6_FILTER_SETBLOCKALL(filterp) \
+	memset (filterp, 0xFF, sizeof (struct icmp6_filter));
+
+#define ND_ROUTER_SOLICIT           133
+#define ND_ROUTER_ADVERT            134
+#define ND_NEIGHBOR_SOLICIT         135
+#define ND_NEIGHBOR_ADVERT          136
+#define ND_REDIRECT                 137
+
+struct nd_router_solicit {
+	struct icmp6_hdr  nd_rs_hdr;
+};
+
+#define nd_rs_type               nd_rs_hdr.icmp6_type
+#define nd_rs_code               nd_rs_hdr.icmp6_code
+#define nd_rs_cksum              nd_rs_hdr.icmp6_cksum
+#define nd_rs_reserved           nd_rs_hdr.icmp6_data32[0]
+
+struct nd_router_advert {
+	struct icmp6_hdr  nd_ra_hdr;
+	uint32_t   nd_ra_reachable;
+	uint32_t   nd_ra_retransmit;
+};
+
+#define nd_ra_type               nd_ra_hdr.icmp6_type
+#define nd_ra_code               nd_ra_hdr.icmp6_code
+#define nd_ra_cksum              nd_ra_hdr.icmp6_cksum
+#define nd_ra_curhoplimit        nd_ra_hdr.icmp6_data8[0]
+#define nd_ra_flags_reserved     nd_ra_hdr.icmp6_data8[1]
+#define ND_RA_FLAG_MANAGED       0x80
+#define ND_RA_FLAG_OTHER         0x40
+#define ND_RA_FLAG_HOME_AGENT    0x20
+#define nd_ra_router_lifetime    nd_ra_hdr.icmp6_data16[1]
+
+struct nd_neighbor_solicit {
+	struct icmp6_hdr  nd_ns_hdr;
+	struct in6_addr   nd_ns_target;
+};
+
+#define nd_ns_type               nd_ns_hdr.icmp6_type
+#define nd_ns_code               nd_ns_hdr.icmp6_code
+#define nd_ns_cksum              nd_ns_hdr.icmp6_cksum
+#define nd_ns_reserved           nd_ns_hdr.icmp6_data32[0]
+
+struct nd_neighbor_advert {
+	struct icmp6_hdr  nd_na_hdr;
+	struct in6_addr   nd_na_target;
+};
+
+#define nd_na_type               nd_na_hdr.icmp6_type
+#define nd_na_code               nd_na_hdr.icmp6_code
+#define nd_na_cksum              nd_na_hdr.icmp6_cksum
+#define nd_na_flags_reserved     nd_na_hdr.icmp6_data32[0]
+#if     __BYTE_ORDER == __BIG_ENDIAN
+#define ND_NA_FLAG_ROUTER        0x80000000
+#define ND_NA_FLAG_SOLICITED     0x40000000
+#define ND_NA_FLAG_OVERRIDE      0x20000000
+#else
+#define ND_NA_FLAG_ROUTER        0x00000080
+#define ND_NA_FLAG_SOLICITED     0x00000040
+#define ND_NA_FLAG_OVERRIDE      0x00000020
+#endif
+
+struct nd_redirect {
+	struct icmp6_hdr  nd_rd_hdr;
+	struct in6_addr   nd_rd_target;
+	struct in6_addr   nd_rd_dst;
+};
+
+#define nd_rd_type               nd_rd_hdr.icmp6_type
+#define nd_rd_code               nd_rd_hdr.icmp6_code
+#define nd_rd_cksum              nd_rd_hdr.icmp6_cksum
+#define nd_rd_reserved           nd_rd_hdr.icmp6_data32[0]
+
+struct nd_opt_hdr {
+	uint8_t  nd_opt_type;
+	uint8_t  nd_opt_len;
+};
+
+#define ND_OPT_SOURCE_LINKADDR		1
+#define ND_OPT_TARGET_LINKADDR		2
+#define ND_OPT_PREFIX_INFORMATION	3
+#define ND_OPT_REDIRECTED_HEADER	4
+#define ND_OPT_MTU			5
+#define ND_OPT_RTR_ADV_INTERVAL		7
+#define ND_OPT_HOME_AGENT_INFO		8
+
+struct nd_opt_prefix_info {
+	uint8_t   nd_opt_pi_type;
+	uint8_t   nd_opt_pi_len;
+	uint8_t   nd_opt_pi_prefix_len;
+	uint8_t   nd_opt_pi_flags_reserved;
+	uint32_t  nd_opt_pi_valid_time;
+	uint32_t  nd_opt_pi_preferred_time;
+	uint32_t  nd_opt_pi_reserved2;
+	struct in6_addr  nd_opt_pi_prefix;
+};
+
+#define ND_OPT_PI_FLAG_ONLINK	0x80
+#define ND_OPT_PI_FLAG_AUTO	0x40
+#define ND_OPT_PI_FLAG_RADDR	0x20
+
+struct nd_opt_rd_hdr {
+	uint8_t   nd_opt_rh_type;
+	uint8_t   nd_opt_rh_len;
+	uint16_t  nd_opt_rh_reserved1;
+	uint32_t  nd_opt_rh_reserved2;
+};
+
+struct nd_opt_mtu {
+	uint8_t   nd_opt_mtu_type;
+	uint8_t   nd_opt_mtu_len;
+	uint16_t  nd_opt_mtu_reserved;
+	uint32_t  nd_opt_mtu_mtu;
+};
+
+struct mld_hdr {
+	struct icmp6_hdr    mld_icmp6_hdr;
+	struct in6_addr     mld_addr;
+};
+
+#define mld_type        mld_icmp6_hdr.icmp6_type
+#define mld_code        mld_icmp6_hdr.icmp6_code
+#define mld_cksum       mld_icmp6_hdr.icmp6_cksum
+#define mld_maxdelay    mld_icmp6_hdr.icmp6_data16[0]
+#define mld_reserved    mld_icmp6_hdr.icmp6_data16[1]
+
+#define ICMP6_ROUTER_RENUMBERING    138
+
+struct icmp6_router_renum {
+	struct icmp6_hdr    rr_hdr;
+	uint8_t             rr_segnum;
+	uint8_t             rr_flags;
+	uint16_t            rr_maxdelay;
+	uint32_t            rr_reserved;
+};
+
+#define rr_type		rr_hdr.icmp6_type
+#define rr_code         rr_hdr.icmp6_code
+#define rr_cksum        rr_hdr.icmp6_cksum
+#define rr_seqnum       rr_hdr.icmp6_data32[0]
+
+#define ICMP6_RR_FLAGS_TEST             0x80
+#define ICMP6_RR_FLAGS_REQRESULT        0x40
+#define ICMP6_RR_FLAGS_FORCEAPPLY       0x20
+#define ICMP6_RR_FLAGS_SPECSITE         0x10
+#define ICMP6_RR_FLAGS_PREVDONE         0x08
+
+struct rr_pco_match {
+	uint8_t             rpm_code;
+	uint8_t             rpm_len;
+	uint8_t             rpm_ordinal;
+	uint8_t             rpm_matchlen;
+	uint8_t             rpm_minlen;
+	uint8_t             rpm_maxlen;
+	uint16_t            rpm_reserved;
+	struct in6_addr     rpm_prefix;
+};
+
+#define RPM_PCO_ADD             1
+#define RPM_PCO_CHANGE          2
+#define RPM_PCO_SETGLOBAL       3
+
+struct rr_pco_use {
+	uint8_t             rpu_uselen;
+	uint8_t             rpu_keeplen;
+	uint8_t             rpu_ramask;
+	uint8_t             rpu_raflags;
+	uint32_t            rpu_vltime;
+	uint32_t            rpu_pltime;
+	uint32_t            rpu_flags;
+	struct in6_addr     rpu_prefix;
+};
+
+#define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK  0x20
+#define ICMP6_RR_PCOUSE_RAFLAGS_AUTO    0x10
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000
+#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000
+#else
+#define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80
+#define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40
+#endif
+
+struct rr_result {
+	uint16_t            rrr_flags;
+	uint8_t             rrr_ordinal;
+	uint8_t             rrr_matchedlen;
+	uint32_t            rrr_ifid;
+	struct in6_addr     rrr_prefix;
+};
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define ICMP6_RR_RESULT_FLAGS_OOB       0x0002
+#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001
+#else
+#define ICMP6_RR_RESULT_FLAGS_OOB       0x0200
+#define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100
+#endif
+
+struct nd_opt_adv_interval {
+	uint8_t   nd_opt_adv_interval_type;
+	uint8_t   nd_opt_adv_interval_len;
+	uint16_t  nd_opt_adv_interval_reserved;
+	uint32_t  nd_opt_adv_interval_ival;
+};
+
+struct nd_opt_home_agent_info {
+	uint8_t   nd_opt_home_agent_info_type;
+	uint8_t   nd_opt_home_agent_info_len;
+	uint16_t  nd_opt_home_agent_info_reserved;
+	uint16_t  nd_opt_home_agent_info_preference;
+	uint16_t  nd_opt_home_agent_info_lifetime;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/if_ether.h b/libc-top-half/musl/include/netinet/if_ether.h
new file mode 100644
index 0000000..3479f51
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/if_ether.h
@@ -0,0 +1,149 @@
+#ifndef _NETINET_IF_ETHER_H
+#define _NETINET_IF_ETHER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#define ETH_ALEN	6
+#define ETH_TLEN	2
+#define ETH_HLEN	14
+#define ETH_ZLEN	60
+#define ETH_DATA_LEN	1500
+#define ETH_FRAME_LEN	1514
+#define ETH_FCS_LEN	4
+#define ETH_MIN_MTU	68
+#define ETH_MAX_MTU	0xFFFFU
+
+#define ETH_P_LOOP	0x0060
+#define ETH_P_PUP	0x0200
+#define ETH_P_PUPAT	0x0201
+#define ETH_P_TSN	0x22F0
+#define ETH_P_ERSPAN2	0x22EB
+#define ETH_P_IP	0x0800
+#define ETH_P_X25	0x0805
+#define ETH_P_ARP	0x0806
+#define	ETH_P_BPQ	0x08FF
+#define ETH_P_IEEEPUP	0x0a00
+#define ETH_P_IEEEPUPAT	0x0a01
+#define ETH_P_BATMAN	0x4305
+#define ETH_P_DEC       0x6000
+#define ETH_P_DNA_DL    0x6001
+#define ETH_P_DNA_RC    0x6002
+#define ETH_P_DNA_RT    0x6003
+#define ETH_P_LAT       0x6004
+#define ETH_P_DIAG      0x6005
+#define ETH_P_CUST      0x6006
+#define ETH_P_SCA       0x6007
+#define ETH_P_TEB	0x6558
+#define ETH_P_RARP      0x8035
+#define ETH_P_ATALK	0x809B
+#define ETH_P_AARP	0x80F3
+#define ETH_P_8021Q	0x8100
+#define ETH_P_IPX	0x8137
+#define ETH_P_IPV6	0x86DD
+#define ETH_P_PAUSE	0x8808
+#define ETH_P_SLOW	0x8809
+#define ETH_P_WCCP	0x883E
+#define ETH_P_MPLS_UC	0x8847
+#define ETH_P_MPLS_MC	0x8848
+#define ETH_P_ATMMPOA	0x884c
+#define ETH_P_PPP_DISC	0x8863
+#define ETH_P_PPP_SES	0x8864
+#define ETH_P_LINK_CTL	0x886c
+#define ETH_P_ATMFATE	0x8884
+#define ETH_P_PAE	0x888E
+#define ETH_P_AOE	0x88A2
+#define ETH_P_8021AD	0x88A8
+#define ETH_P_802_EX1	0x88B5
+#define ETH_P_ERSPAN	0x88BE
+#define ETH_P_PREAUTH	0x88C7
+#define ETH_P_TIPC	0x88CA
+#define ETH_P_LLDP	0x88CC
+#define ETH_P_MRP	0x88E3
+#define ETH_P_MACSEC	0x88E5
+#define ETH_P_8021AH	0x88E7
+#define ETH_P_MVRP	0x88F5
+#define ETH_P_1588	0x88F7
+#define ETH_P_NCSI	0x88F8
+#define ETH_P_PRP	0x88FB
+#define ETH_P_CFM	0x8902
+#define ETH_P_FCOE	0x8906
+#define ETH_P_TDLS	0x890D
+#define ETH_P_FIP	0x8914
+#define ETH_P_IBOE	0x8915
+#define ETH_P_80221	0x8917
+#define ETH_P_HSR	0x892F
+#define ETH_P_NSH	0x894F
+#define ETH_P_LOOPBACK	0x9000
+#define ETH_P_QINQ1	0x9100
+#define ETH_P_QINQ2	0x9200
+#define ETH_P_QINQ3	0x9300
+#define ETH_P_EDSA	0xDADA
+#define ETH_P_DSA_8021Q	0xDADB
+#define ETH_P_IFE	0xED3E
+#define ETH_P_AF_IUCV	0xFBFB
+
+#define ETH_P_802_3_MIN	0x0600
+
+#define ETH_P_802_3	0x0001
+#define ETH_P_AX25	0x0002
+#define ETH_P_ALL	0x0003
+#define ETH_P_802_2	0x0004
+#define ETH_P_SNAP	0x0005
+#define ETH_P_DDCMP     0x0006
+#define ETH_P_WAN_PPP   0x0007
+#define ETH_P_PPP_MP    0x0008
+#define ETH_P_LOCALTALK 0x0009
+#define ETH_P_CAN	0x000C
+#define ETH_P_CANFD	0x000D
+#define ETH_P_PPPTALK	0x0010
+#define ETH_P_TR_802_2	0x0011
+#define ETH_P_MOBITEX	0x0015
+#define ETH_P_CONTROL	0x0016
+#define ETH_P_IRDA	0x0017
+#define ETH_P_ECONET	0x0018
+#define ETH_P_HDLC	0x0019
+#define ETH_P_ARCNET	0x001A
+#define ETH_P_DSA	0x001B
+#define ETH_P_TRAILER	0x001C
+#define ETH_P_PHONET	0x00F5
+#define ETH_P_IEEE802154 0x00F6
+#define ETH_P_CAIF	0x00F7
+#define ETH_P_XDSA	0x00F8
+#define ETH_P_MAP	0x00F9
+
+struct ethhdr {
+	uint8_t h_dest[ETH_ALEN];
+	uint8_t h_source[ETH_ALEN];
+	uint16_t h_proto;
+};
+
+#include <net/ethernet.h>
+#include <net/if_arp.h>
+
+struct	ether_arp {
+	struct	arphdr ea_hdr;
+	uint8_t arp_sha[ETH_ALEN];
+	uint8_t arp_spa[4];
+	uint8_t arp_tha[ETH_ALEN];
+	uint8_t arp_tpa[4];
+};
+#define	arp_hrd	ea_hdr.ar_hrd
+#define	arp_pro	ea_hdr.ar_pro
+#define	arp_hln	ea_hdr.ar_hln
+#define	arp_pln	ea_hdr.ar_pln
+#define	arp_op	ea_hdr.ar_op
+
+#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
+do { \
+	(enaddr)[0] = 0x01; \
+	(enaddr)[1] = 0x00; \
+	(enaddr)[2] = 0x5e; \
+	(enaddr)[3] = ((uint8_t *)ipaddr)[1] & 0x7f; \
+	(enaddr)[4] = ((uint8_t *)ipaddr)[2]; \
+	(enaddr)[5] = ((uint8_t *)ipaddr)[3]; \
+} while(0)
+
+#define __UAPI_DEF_ETHHDR       0
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/igmp.h b/libc-top-half/musl/include/netinet/igmp.h
new file mode 100644
index 0000000..bbe8206
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/igmp.h
@@ -0,0 +1,45 @@
+#ifndef _NETINET_IGMP_H
+#define _NETINET_IGMP_H
+
+#include <stdint.h>
+#include <netinet/in.h>
+
+struct igmp {
+	uint8_t igmp_type;
+	uint8_t igmp_code;
+	uint16_t igmp_cksum;
+	struct in_addr igmp_group;
+};
+
+#define IGMP_MINLEN			8
+
+#define IGMP_MEMBERSHIP_QUERY   	0x11
+#define IGMP_V1_MEMBERSHIP_REPORT	0x12
+#define IGMP_V2_MEMBERSHIP_REPORT	0x16
+#define IGMP_V2_LEAVE_GROUP		0x17
+
+#define IGMP_DVMRP			0x13
+#define IGMP_PIM			0x14
+#define IGMP_TRACE			0x15
+
+#define IGMP_MTRACE_RESP		0x1e
+#define IGMP_MTRACE			0x1f
+
+#define IGMP_MAX_HOST_REPORT_DELAY	10
+#define IGMP_TIMER_SCALE		10
+
+#define IGMP_DELAYING_MEMBER	1
+#define IGMP_IDLE_MEMBER	2
+#define IGMP_LAZY_MEMBER	3
+#define IGMP_SLEEPING_MEMBER	4
+#define IGMP_AWAKENING_MEMBER	5
+
+#define IGMP_v1_ROUTER		1
+#define IGMP_v2_ROUTER		2
+
+#define IGMP_HOST_MEMBERSHIP_QUERY	IGMP_MEMBERSHIP_QUERY
+#define IGMP_HOST_MEMBERSHIP_REPORT	IGMP_V1_MEMBERSHIP_REPORT
+#define IGMP_HOST_NEW_MEMBERSHIP_REPORT	IGMP_V2_MEMBERSHIP_REPORT
+#define IGMP_HOST_LEAVE_MESSAGE		IGMP_V2_LEAVE_GROUP
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/in.h b/libc-top-half/musl/include/netinet/in.h
new file mode 100644
index 0000000..d9422af
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/in.h
@@ -0,0 +1,433 @@
+#ifndef	_NETINET_IN_H
+#define	_NETINET_IN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+#include <inttypes.h>
+#include <sys/socket.h>
+#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
+#else
+#include <__header_netinet_in.h>
+#endif
+
+typedef uint16_t in_port_t;
+typedef uint32_t in_addr_t;
+#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
+struct in_addr { in_addr_t s_addr; };
+#endif
+
+#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
+struct sockaddr_in {
+	sa_family_t sin_family;
+	in_port_t sin_port;
+	struct in_addr sin_addr;
+	uint8_t sin_zero[8];
+};
+#endif
+
+#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
+struct in6_addr {
+	union {
+		uint8_t __s6_addr[16];
+		uint16_t __s6_addr16[8];
+		uint32_t __s6_addr32[4];
+	} __in6_union;
+};
+#define s6_addr __in6_union.__s6_addr
+#define s6_addr16 __in6_union.__s6_addr16
+#define s6_addr32 __in6_union.__s6_addr32
+#endif
+
+#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
+struct sockaddr_in6 {
+	sa_family_t     sin6_family;
+	in_port_t       sin6_port;
+	uint32_t        sin6_flowinfo;
+	struct in6_addr sin6_addr;
+	uint32_t        sin6_scope_id;
+};
+#endif
+
+struct ipv6_mreq {
+	struct in6_addr ipv6mr_multiaddr;
+	unsigned        ipv6mr_interface;
+};
+
+#define INADDR_ANY        ((in_addr_t) 0x00000000)
+#define INADDR_BROADCAST  ((in_addr_t) 0xffffffff)
+#define INADDR_NONE       ((in_addr_t) 0xffffffff)
+#define INADDR_LOOPBACK   ((in_addr_t) 0x7f000001)
+#define INADDR_DUMMY      ((in_addr_t) 0xc0000008)
+
+#define INADDR_UNSPEC_GROUP     ((in_addr_t) 0xe0000000)
+#define INADDR_ALLHOSTS_GROUP   ((in_addr_t) 0xe0000001)
+#define INADDR_ALLRTRS_GROUP    ((in_addr_t) 0xe0000002)
+#define INADDR_ALLSNOOPERS_GROUP ((in_addr_t) 0xe000006a)
+#define INADDR_MAX_LOCAL_GROUP  ((in_addr_t) 0xe00000ff)
+
+#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
+#define IN6ADDR_ANY_INIT      { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
+#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
+#endif
+
+extern const struct in6_addr in6addr_any, in6addr_loopback;
+
+#define INET_ADDRSTRLEN  16
+#define INET6_ADDRSTRLEN 46
+
+uint32_t htonl(uint32_t);
+uint16_t htons(uint16_t);
+uint32_t ntohl(uint32_t);
+uint16_t ntohs(uint16_t);
+
+#define IPPORT_RESERVED 1024
+
+#ifdef __wasilibc_unmodified_upstream /* Use alternate WASI libc headers */
+#define IPPROTO_IP       0
+#define IPPROTO_HOPOPTS  0
+#define IPPROTO_ICMP     1
+#define IPPROTO_IGMP     2
+#define IPPROTO_IPIP     4
+#define IPPROTO_TCP      6
+#define IPPROTO_EGP      8
+#define IPPROTO_PUP      12
+#define IPPROTO_UDP      17
+#define IPPROTO_IDP      22
+#define IPPROTO_TP       29
+#define IPPROTO_DCCP     33
+#define IPPROTO_IPV6     41
+#define IPPROTO_ROUTING  43
+#define IPPROTO_FRAGMENT 44
+#define IPPROTO_RSVP     46
+#define IPPROTO_GRE      47
+#define IPPROTO_ESP      50
+#define IPPROTO_AH       51
+#define IPPROTO_ICMPV6   58
+#define IPPROTO_NONE     59
+#define IPPROTO_DSTOPTS  60
+#define IPPROTO_MTP      92
+#define IPPROTO_BEETPH   94
+#define IPPROTO_ENCAP    98
+#define IPPROTO_PIM      103
+#define IPPROTO_COMP     108
+#define IPPROTO_SCTP     132
+#define IPPROTO_MH       135
+#define IPPROTO_UDPLITE  136
+#define IPPROTO_MPLS     137
+#define IPPROTO_ETHERNET 143
+#define IPPROTO_RAW      255
+#define IPPROTO_MPTCP    262
+#define IPPROTO_MAX      263
+#endif
+
+#define IN6_IS_ADDR_UNSPECIFIED(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0)
+
+#define IN6_IS_ADDR_LOOPBACK(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint32_t *) (a))[2] == 0 && \
+         ((uint8_t *) (a))[12] == 0 && ((uint8_t *) (a))[13] == 0 && \
+         ((uint8_t *) (a))[14] == 0 && ((uint8_t *) (a))[15] == 1 )
+
+#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
+
+#define IN6_IS_ADDR_LINKLOCAL(a) \
+        ((((uint8_t *) (a))[0]) == 0xfe && (((uint8_t *) (a))[1] & 0xc0) == 0x80)
+
+#define IN6_IS_ADDR_SITELOCAL(a) \
+        ((((uint8_t *) (a))[0]) == 0xfe && (((uint8_t *) (a))[1] & 0xc0) == 0xc0)
+
+#define IN6_IS_ADDR_V4MAPPED(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint8_t *) (a))[8] == 0 && ((uint8_t *) (a))[9] == 0 && \
+         ((uint8_t *) (a))[10] == 0xff && ((uint8_t *) (a))[11] == 0xff)
+
+#define IN6_IS_ADDR_V4COMPAT(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint32_t *) (a))[2] == 0 && ((uint8_t *) (a))[15] > 1)
+
+#define IN6_IS_ADDR_MC_NODELOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x1))
+
+#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x2))
+
+#define IN6_IS_ADDR_MC_SITELOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x5))
+
+#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x8))
+
+#define IN6_IS_ADDR_MC_GLOBAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0xe))
+
+#define __ARE_4_EQUAL(a,b) \
+	(!( (0[a]-0[b]) | (1[a]-1[b]) | (2[a]-2[b]) | (3[a]-3[b]) ))
+#define IN6_ARE_ADDR_EQUAL(a,b) \
+	__ARE_4_EQUAL((const uint32_t *)(a), (const uint32_t *)(b))
+
+#define	IN_CLASSA(a)		((((in_addr_t)(a)) & 0x80000000) == 0)
+#define	IN_CLASSA_NET		0xff000000
+#define	IN_CLASSA_NSHIFT	24
+#define	IN_CLASSA_HOST		(0xffffffff & ~IN_CLASSA_NET)
+#define	IN_CLASSA_MAX		128
+#define	IN_CLASSB(a)		((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
+#define	IN_CLASSB_NET		0xffff0000
+#define	IN_CLASSB_NSHIFT	16
+#define	IN_CLASSB_HOST		(0xffffffff & ~IN_CLASSB_NET)
+#define	IN_CLASSB_MAX		65536
+#define	IN_CLASSC(a)		((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
+#define	IN_CLASSC_NET		0xffffff00
+#define	IN_CLASSC_NSHIFT	8
+#define	IN_CLASSC_HOST		(0xffffffff & ~IN_CLASSC_NET)
+#define	IN_CLASSD(a)		((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
+#define	IN_MULTICAST(a)		IN_CLASSD(a)
+#define	IN_EXPERIMENTAL(a)	((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
+#define	IN_BADCLASS(a)		((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
+
+#define IN_LOOPBACKNET 127
+
+
+#define IP_TOS             1
+#define IP_TTL             2
+#define IP_HDRINCL         3
+#define IP_OPTIONS         4
+#define IP_ROUTER_ALERT    5
+#define IP_RECVOPTS        6
+#define IP_RETOPTS         7
+#define IP_PKTINFO         8
+#define IP_PKTOPTIONS      9
+#define IP_PMTUDISC        10
+#define IP_MTU_DISCOVER    10
+#define IP_RECVERR         11
+#define IP_RECVTTL         12
+#define IP_RECVTOS         13
+#define IP_MTU             14
+#define IP_FREEBIND        15
+#define IP_IPSEC_POLICY    16
+#define IP_XFRM_POLICY     17
+#define IP_PASSSEC         18
+#define IP_TRANSPARENT     19
+#define IP_ORIGDSTADDR     20
+#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
+#define IP_MINTTL          21
+#define IP_NODEFRAG        22
+#define IP_CHECKSUM        23
+#define IP_BIND_ADDRESS_NO_PORT 24
+#define IP_RECVFRAGSIZE    25
+#define IP_RECVERR_RFC4884 26
+#define IP_MULTICAST_IF    32
+#define IP_MULTICAST_TTL   33
+#define IP_MULTICAST_LOOP  34
+#define IP_ADD_MEMBERSHIP  35
+#define IP_DROP_MEMBERSHIP 36
+#define IP_UNBLOCK_SOURCE  37
+#define IP_BLOCK_SOURCE    38
+#define IP_ADD_SOURCE_MEMBERSHIP  39
+#define IP_DROP_SOURCE_MEMBERSHIP 40
+#define IP_MSFILTER        41
+#define IP_MULTICAST_ALL   49
+#define IP_UNICAST_IF      50
+
+#define IP_RECVRETOPTS IP_RETOPTS
+
+#define IP_PMTUDISC_DONT   0
+#define IP_PMTUDISC_WANT   1
+#define IP_PMTUDISC_DO     2
+#define IP_PMTUDISC_PROBE  3
+#define IP_PMTUDISC_INTERFACE 4
+#define IP_PMTUDISC_OMIT   5
+
+#define IP_DEFAULT_MULTICAST_TTL        1
+#define IP_DEFAULT_MULTICAST_LOOP       1
+#define IP_MAX_MEMBERSHIPS              20
+
+struct ip_opts {
+	struct in_addr ip_dst;
+	char ip_opts[40];
+};
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#define MCAST_JOIN_GROUP   42
+#define MCAST_BLOCK_SOURCE 43
+#define MCAST_UNBLOCK_SOURCE      44
+#define MCAST_LEAVE_GROUP  45
+#define MCAST_JOIN_SOURCE_GROUP   46
+#define MCAST_LEAVE_SOURCE_GROUP  47
+#define MCAST_MSFILTER     48
+
+#define MCAST_EXCLUDE 0
+#define MCAST_INCLUDE 1
+
+struct ip_mreq {
+	struct in_addr imr_multiaddr;
+	struct in_addr imr_interface;
+};
+
+struct ip_mreqn {
+	struct in_addr imr_multiaddr;
+	struct in_addr imr_address;
+	int imr_ifindex;
+};
+
+struct ip_mreq_source {
+	struct in_addr imr_multiaddr;
+	struct in_addr imr_interface;
+	struct in_addr imr_sourceaddr;
+};
+
+struct ip_msfilter {
+	struct in_addr imsf_multiaddr;
+	struct in_addr imsf_interface;
+	uint32_t imsf_fmode;
+	uint32_t imsf_numsrc;
+	struct in_addr imsf_slist[1];
+};
+#define IP_MSFILTER_SIZE(numsrc) \
+	(sizeof(struct ip_msfilter) - sizeof(struct in_addr) \
+	+ (numsrc) * sizeof(struct in_addr))
+
+struct group_req {
+	uint32_t gr_interface;
+	struct sockaddr_storage gr_group;
+};
+
+struct group_source_req {
+	uint32_t gsr_interface;
+	struct sockaddr_storage gsr_group;
+	struct sockaddr_storage gsr_source;
+};
+
+struct group_filter {
+	uint32_t gf_interface;
+	struct sockaddr_storage gf_group;
+	uint32_t gf_fmode;
+	uint32_t gf_numsrc;
+	struct sockaddr_storage gf_slist[1];
+};
+#define GROUP_FILTER_SIZE(numsrc) \
+	(sizeof(struct group_filter) - sizeof(struct sockaddr_storage) \
+	+ (numsrc) * sizeof(struct sockaddr_storage))
+
+struct in_pktinfo {
+	int ipi_ifindex;
+	struct in_addr ipi_spec_dst;
+	struct in_addr ipi_addr;
+};
+
+struct in6_pktinfo {
+	struct in6_addr ipi6_addr;
+	unsigned ipi6_ifindex;
+};
+
+struct ip6_mtuinfo {
+	struct sockaddr_in6 ip6m_addr;
+	uint32_t ip6m_mtu;
+};
+#endif
+
+#define IPV6_ADDRFORM           1
+#define IPV6_2292PKTINFO        2
+#define IPV6_2292HOPOPTS        3
+#define IPV6_2292DSTOPTS        4
+#define IPV6_2292RTHDR          5
+#define IPV6_2292PKTOPTIONS     6
+#define IPV6_CHECKSUM           7
+#define IPV6_2292HOPLIMIT       8
+#define IPV6_NEXTHOP            9
+#define IPV6_AUTHHDR            10
+#define IPV6_UNICAST_HOPS       16
+#define IPV6_MULTICAST_IF       17
+#define IPV6_MULTICAST_HOPS     18
+#define IPV6_MULTICAST_LOOP     19
+#define IPV6_JOIN_GROUP         20
+#define IPV6_LEAVE_GROUP        21
+#define IPV6_ROUTER_ALERT       22
+#define IPV6_MTU_DISCOVER       23
+#define IPV6_MTU                24
+#define IPV6_RECVERR            25
+#define IPV6_V6ONLY             26
+#define IPV6_JOIN_ANYCAST       27
+#define IPV6_LEAVE_ANYCAST      28
+#define IPV6_MULTICAST_ALL      29
+#define IPV6_ROUTER_ALERT_ISOLATE 30
+#define IPV6_IPSEC_POLICY       34
+#define IPV6_XFRM_POLICY        35
+#define IPV6_HDRINCL            36
+
+#define IPV6_RECVPKTINFO        49
+#define IPV6_PKTINFO            50
+#define IPV6_RECVHOPLIMIT       51
+#define IPV6_HOPLIMIT           52
+#define IPV6_RECVHOPOPTS        53
+#define IPV6_HOPOPTS            54
+#define IPV6_RTHDRDSTOPTS       55
+#define IPV6_RECVRTHDR          56
+#define IPV6_RTHDR              57
+#define IPV6_RECVDSTOPTS        58
+#define IPV6_DSTOPTS            59
+#define IPV6_RECVPATHMTU        60
+#define IPV6_PATHMTU            61
+#define IPV6_DONTFRAG           62
+#define IPV6_RECVTCLASS         66
+#define IPV6_TCLASS             67
+#define IPV6_AUTOFLOWLABEL      70
+#define IPV6_ADDR_PREFERENCES   72
+#define IPV6_MINHOPCOUNT        73
+#define IPV6_ORIGDSTADDR        74
+#define IPV6_RECVORIGDSTADDR    IPV6_ORIGDSTADDR
+#define IPV6_TRANSPARENT        75
+#define IPV6_UNICAST_IF         76
+#define IPV6_RECVFRAGSIZE       77
+#define IPV6_FREEBIND           78
+
+#define IPV6_ADD_MEMBERSHIP     IPV6_JOIN_GROUP
+#define IPV6_DROP_MEMBERSHIP    IPV6_LEAVE_GROUP
+#define IPV6_RXHOPOPTS          IPV6_HOPOPTS
+#define IPV6_RXDSTOPTS          IPV6_DSTOPTS
+
+#define IPV6_PMTUDISC_DONT      0
+#define IPV6_PMTUDISC_WANT      1
+#define IPV6_PMTUDISC_DO        2
+#define IPV6_PMTUDISC_PROBE     3
+#define IPV6_PMTUDISC_INTERFACE 4
+#define IPV6_PMTUDISC_OMIT      5
+
+#define IPV6_PREFER_SRC_TMP            0x0001
+#define IPV6_PREFER_SRC_PUBLIC         0x0002
+#define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100
+#define IPV6_PREFER_SRC_COA            0x0004
+#define IPV6_PREFER_SRC_HOME           0x0400
+#define IPV6_PREFER_SRC_CGA            0x0008
+#define IPV6_PREFER_SRC_NONCGA         0x0800
+
+#define IPV6_RTHDR_LOOSE        0
+#define IPV6_RTHDR_STRICT       1
+
+#define IPV6_RTHDR_TYPE_0       0
+
+#define __UAPI_DEF_IN_ADDR      0
+#define __UAPI_DEF_IN_IPPROTO   0
+#define __UAPI_DEF_IN_PKTINFO   0
+#define __UAPI_DEF_IP_MREQ      0
+#define __UAPI_DEF_SOCKADDR_IN  0
+#define __UAPI_DEF_IN_CLASS     0
+#define __UAPI_DEF_IN6_ADDR     0
+#define __UAPI_DEF_IN6_ADDR_ALT 0
+#define __UAPI_DEF_SOCKADDR_IN6 0
+#define __UAPI_DEF_IPV6_MREQ    0
+#define __UAPI_DEF_IPPROTO_V6   0
+#define __UAPI_DEF_IPV6_OPTIONS 0
+#define __UAPI_DEF_IN6_PKTINFO  0
+#define __UAPI_DEF_IP6_MTUINFO  0
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/in_systm.h b/libc-top-half/musl/include/netinet/in_systm.h
new file mode 100644
index 0000000..a7b4177
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/in_systm.h
@@ -0,0 +1,9 @@
+#ifndef _NETINET_IN_SYSTM_H
+#define _NETINET_IN_SYSTM_H
+
+#include <stdint.h>
+
+typedef uint16_t n_short;
+typedef uint32_t n_long, n_time;
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/ip.h b/libc-top-half/musl/include/netinet/ip.h
new file mode 100644
index 0000000..0ae132a
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/ip.h
@@ -0,0 +1,199 @@
+#ifndef _NETINET_IP_H
+#define _NETINET_IP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <netinet/in.h>
+
+struct timestamp {
+	uint8_t len;
+	uint8_t ptr;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	unsigned int flags:4;
+	unsigned int overflow:4;
+#else
+	unsigned int overflow:4;
+	unsigned int flags:4;
+#endif
+	uint32_t data[9];
+  };
+
+struct iphdr {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	unsigned int ihl:4;
+	unsigned int version:4;
+#else
+	unsigned int version:4;
+	unsigned int ihl:4;
+#endif
+	uint8_t tos;
+	uint16_t tot_len;
+	uint16_t id;
+	uint16_t frag_off;
+	uint8_t ttl;
+	uint8_t protocol;
+	uint16_t check;
+	uint32_t saddr;
+	uint32_t daddr;
+};
+
+struct ip {
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	unsigned int ip_hl:4;
+	unsigned int ip_v:4;
+#else
+	unsigned int ip_v:4;
+	unsigned int ip_hl:4;
+#endif
+	uint8_t ip_tos;
+	uint16_t ip_len;
+	uint16_t ip_id;
+	uint16_t ip_off;
+	uint8_t ip_ttl;
+	uint8_t ip_p;
+	uint16_t ip_sum;
+	struct in_addr ip_src, ip_dst;
+};
+
+#define	IP_RF 0x8000
+#define	IP_DF 0x4000
+#define	IP_MF 0x2000
+#define	IP_OFFMASK 0x1fff
+
+struct ip_timestamp {
+	uint8_t ipt_code;
+	uint8_t ipt_len;
+	uint8_t ipt_ptr;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	unsigned int ipt_flg:4;
+	unsigned int ipt_oflw:4;
+#else
+	unsigned int ipt_oflw:4;
+	unsigned int ipt_flg:4;
+#endif
+	uint32_t data[9];
+};
+
+#define	IPVERSION	4
+#define	IP_MAXPACKET	65535
+
+#define	IPTOS_ECN_MASK		0x03
+#define	IPTOS_ECN(x)		((x) & IPTOS_ECN_MASK)
+#define	IPTOS_ECN_NOT_ECT	0x00
+#define	IPTOS_ECN_ECT1		0x01
+#define	IPTOS_ECN_ECT0		0x02
+#define	IPTOS_ECN_CE		0x03
+
+#define	IPTOS_DSCP_MASK		0xfc
+#define	IPTOS_DSCP(x)		((x) & IPTOS_DSCP_MASK)
+#define	IPTOS_DSCP_AF11		0x28
+#define	IPTOS_DSCP_AF12		0x30
+#define	IPTOS_DSCP_AF13		0x38
+#define	IPTOS_DSCP_AF21		0x48
+#define	IPTOS_DSCP_AF22		0x50
+#define	IPTOS_DSCP_AF23		0x58
+#define	IPTOS_DSCP_AF31		0x68
+#define	IPTOS_DSCP_AF32		0x70
+#define	IPTOS_DSCP_AF33		0x78
+#define	IPTOS_DSCP_AF41		0x88
+#define	IPTOS_DSCP_AF42		0x90
+#define	IPTOS_DSCP_AF43		0x98
+#define	IPTOS_DSCP_EF		0xb8
+
+#define	IPTOS_CLASS_MASK	0xe0
+#define	IPTOS_CLASS(x)		((x) & IPTOS_CLASS_MASK)
+#define	IPTOS_CLASS_CS0		0x00
+#define	IPTOS_CLASS_CS1		0x20
+#define	IPTOS_CLASS_CS2		0x40
+#define	IPTOS_CLASS_CS3		0x60
+#define	IPTOS_CLASS_CS4		0x80
+#define	IPTOS_CLASS_CS5		0xa0
+#define	IPTOS_CLASS_CS6		0xc0
+#define	IPTOS_CLASS_CS7		0xe0
+#define	IPTOS_CLASS_DEFAULT	IPTOS_CLASS_CS0
+
+#define	IPTOS_TOS_MASK		0x1E
+#define	IPTOS_TOS(tos)		((tos) & IPTOS_TOS_MASK)
+#define	IPTOS_LOWDELAY		0x10
+#define	IPTOS_THROUGHPUT	0x08
+#define	IPTOS_RELIABILITY	0x04
+#define	IPTOS_LOWCOST		0x02
+#define	IPTOS_MINCOST		IPTOS_LOWCOST
+
+#define	IPTOS_PREC_MASK			0xe0
+#define	IPTOS_PREC(tos)                ((tos) & IPTOS_PREC_MASK)
+#define	IPTOS_PREC_NETCONTROL		0xe0
+#define	IPTOS_PREC_INTERNETCONTROL	0xc0
+#define	IPTOS_PREC_CRITIC_ECP		0xa0
+#define	IPTOS_PREC_FLASHOVERRIDE	0x80
+#define	IPTOS_PREC_FLASH		0x60
+#define	IPTOS_PREC_IMMEDIATE		0x40
+#define	IPTOS_PREC_PRIORITY		0x20
+#define	IPTOS_PREC_ROUTINE		0x00
+
+#define	IPOPT_COPY		0x80
+#define	IPOPT_CLASS_MASK	0x60
+#define	IPOPT_NUMBER_MASK	0x1f
+
+#define	IPOPT_COPIED(o)		((o) & IPOPT_COPY)
+#define	IPOPT_CLASS(o)		((o) & IPOPT_CLASS_MASK)
+#define	IPOPT_NUMBER(o)		((o) & IPOPT_NUMBER_MASK)
+
+#define	IPOPT_CONTROL		0x00
+#define	IPOPT_RESERVED1		0x20
+#define	IPOPT_DEBMEAS		0x40
+#define	IPOPT_MEASUREMENT       IPOPT_DEBMEAS
+#define	IPOPT_RESERVED2		0x60
+
+#define	IPOPT_EOL		0
+#define	IPOPT_END		IPOPT_EOL
+#define	IPOPT_NOP		1
+#define	IPOPT_NOOP		IPOPT_NOP
+
+#define	IPOPT_RR		7
+#define	IPOPT_TS		68
+#define	IPOPT_TIMESTAMP		IPOPT_TS
+#define	IPOPT_SECURITY		130
+#define	IPOPT_SEC		IPOPT_SECURITY
+#define	IPOPT_LSRR		131
+#define	IPOPT_SATID		136
+#define	IPOPT_SID		IPOPT_SATID
+#define	IPOPT_SSRR		137
+#define	IPOPT_RA		148
+
+#define	IPOPT_OPTVAL		0
+#define	IPOPT_OLEN		1
+#define	IPOPT_OFFSET		2
+#define	IPOPT_MINOFF		4
+
+#define	MAX_IPOPTLEN		40
+
+#define	IPOPT_TS_TSONLY		0
+#define	IPOPT_TS_TSANDADDR	1
+#define	IPOPT_TS_PRESPEC	3
+
+#define	IPOPT_SECUR_UNCLASS	0x0000
+#define	IPOPT_SECUR_CONFID	0xf135
+#define	IPOPT_SECUR_EFTO	0x789a
+#define	IPOPT_SECUR_MMMM	0xbc4d
+#define	IPOPT_SECUR_RESTR	0xaf13
+#define	IPOPT_SECUR_SECRET	0xd788
+#define	IPOPT_SECUR_TOPSECRET	0x6bc5
+
+#define	MAXTTL		255
+#define	IPDEFTTL	64
+#define	IPFRAGTTL	60
+#define	IPTTLDEC	1
+
+#define	IP_MSS		576
+
+#define __UAPI_DEF_IPHDR	0
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/ip6.h b/libc-top-half/musl/include/netinet/ip6.h
new file mode 100644
index 0000000..50c626a
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/ip6.h
@@ -0,0 +1,141 @@
+#ifndef _NETINET_IP6_H
+#define _NETINET_IP6_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <netinet/in.h>
+
+struct ip6_hdr {
+	union {
+		struct ip6_hdrctl {
+			uint32_t ip6_un1_flow;
+			uint16_t ip6_un1_plen;
+			uint8_t  ip6_un1_nxt;
+			uint8_t  ip6_un1_hlim;
+		} ip6_un1;
+		uint8_t ip6_un2_vfc;
+	} ip6_ctlun;
+	struct in6_addr ip6_src;
+	struct in6_addr ip6_dst;
+};
+
+#define ip6_vfc   ip6_ctlun.ip6_un2_vfc
+#define ip6_flow  ip6_ctlun.ip6_un1.ip6_un1_flow
+#define ip6_plen  ip6_ctlun.ip6_un1.ip6_un1_plen
+#define ip6_nxt   ip6_ctlun.ip6_un1.ip6_un1_nxt
+#define ip6_hlim  ip6_ctlun.ip6_un1.ip6_un1_hlim
+#define ip6_hops  ip6_ctlun.ip6_un1.ip6_un1_hlim
+
+struct ip6_ext {
+	uint8_t  ip6e_nxt;
+	uint8_t  ip6e_len;
+};
+
+struct ip6_hbh {
+	uint8_t  ip6h_nxt;
+	uint8_t  ip6h_len;
+};
+
+struct ip6_dest {
+	uint8_t  ip6d_nxt;
+	uint8_t  ip6d_len;
+};
+
+struct ip6_rthdr {
+	uint8_t  ip6r_nxt;
+	uint8_t  ip6r_len;
+	uint8_t  ip6r_type;
+	uint8_t  ip6r_segleft;
+};
+
+struct ip6_rthdr0 {
+	uint8_t  ip6r0_nxt;
+	uint8_t  ip6r0_len;
+	uint8_t  ip6r0_type;
+	uint8_t  ip6r0_segleft;
+	uint8_t  ip6r0_reserved;
+	uint8_t  ip6r0_slmap[3];
+	struct in6_addr ip6r0_addr[];
+};
+
+struct ip6_frag {
+	uint8_t   ip6f_nxt;
+	uint8_t   ip6f_reserved;
+	uint16_t  ip6f_offlg;
+	uint32_t  ip6f_ident;
+};
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define IP6F_OFF_MASK       0xfff8
+#define IP6F_RESERVED_MASK  0x0006
+#define IP6F_MORE_FRAG      0x0001
+#else
+#define IP6F_OFF_MASK       0xf8ff
+#define IP6F_RESERVED_MASK  0x0600
+#define IP6F_MORE_FRAG      0x0100
+#endif
+
+struct ip6_opt {
+	uint8_t  ip6o_type;
+	uint8_t  ip6o_len;
+};
+
+#define IP6OPT_TYPE(o)		((o) & 0xc0)
+#define IP6OPT_TYPE_SKIP	0x00
+#define IP6OPT_TYPE_DISCARD	0x40
+#define IP6OPT_TYPE_FORCEICMP	0x80
+#define IP6OPT_TYPE_ICMP	0xc0
+#define IP6OPT_TYPE_MUTABLE	0x20
+
+#define IP6OPT_PAD1	0
+#define IP6OPT_PADN	1
+
+#define IP6OPT_JUMBO		0xc2
+#define IP6OPT_NSAP_ADDR	0xc3
+#define IP6OPT_TUNNEL_LIMIT	0x04
+#define IP6OPT_ROUTER_ALERT	0x05
+
+struct ip6_opt_jumbo {
+	uint8_t  ip6oj_type;
+	uint8_t  ip6oj_len;
+	uint8_t  ip6oj_jumbo_len[4];
+};
+#define IP6OPT_JUMBO_LEN	6
+
+struct ip6_opt_nsap {
+	uint8_t  ip6on_type;
+	uint8_t  ip6on_len;
+	uint8_t  ip6on_src_nsap_len;
+	uint8_t  ip6on_dst_nsap_len;
+};
+
+struct ip6_opt_tunnel {
+	uint8_t  ip6ot_type;
+	uint8_t  ip6ot_len;
+	uint8_t  ip6ot_encap_limit;
+};
+
+struct ip6_opt_router {
+	uint8_t  ip6or_type;
+	uint8_t  ip6or_len;
+	uint8_t  ip6or_value[2];
+};
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define IP6_ALERT_MLD	0x0000
+#define IP6_ALERT_RSVP	0x0001
+#define IP6_ALERT_AN	0x0002
+#else
+#define IP6_ALERT_MLD	0x0000
+#define IP6_ALERT_RSVP	0x0100
+#define IP6_ALERT_AN	0x0200
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/ip_icmp.h b/libc-top-half/musl/include/netinet/ip_icmp.h
new file mode 100644
index 0000000..b9e0df8
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/ip_icmp.h
@@ -0,0 +1,193 @@
+#ifndef _NETINET_IP_ICMP_H
+#define _NETINET_IP_ICMP_H
+
+#include <stdint.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct icmphdr {
+	uint8_t type;
+	uint8_t code;
+	uint16_t checksum;
+	union {
+		struct {
+			uint16_t id;
+			uint16_t sequence;
+		} echo;
+		uint32_t gateway;
+		struct {
+			uint16_t __unused;
+			uint16_t mtu;
+		} frag;
+		uint8_t reserved[4];
+	} un;
+};
+
+#define ICMP_ECHOREPLY		0
+#define ICMP_DEST_UNREACH	3
+#define ICMP_SOURCE_QUENCH	4
+#define ICMP_REDIRECT		5
+#define ICMP_ECHO		8
+#define ICMP_TIME_EXCEEDED	11
+#define ICMP_PARAMETERPROB	12
+#define ICMP_TIMESTAMP		13
+#define ICMP_TIMESTAMPREPLY	14
+#define ICMP_INFO_REQUEST	15
+#define ICMP_INFO_REPLY		16
+#define ICMP_ADDRESS		17
+#define ICMP_ADDRESSREPLY	18
+#define NR_ICMP_TYPES		18
+
+
+#define ICMP_NET_UNREACH	0
+#define ICMP_HOST_UNREACH	1
+#define ICMP_PROT_UNREACH	2
+#define ICMP_PORT_UNREACH	3
+#define ICMP_FRAG_NEEDED	4
+#define ICMP_SR_FAILED		5
+#define ICMP_NET_UNKNOWN	6
+#define ICMP_HOST_UNKNOWN	7
+#define ICMP_HOST_ISOLATED	8
+#define ICMP_NET_ANO		9
+#define ICMP_HOST_ANO		10
+#define ICMP_NET_UNR_TOS	11
+#define ICMP_HOST_UNR_TOS	12
+#define ICMP_PKT_FILTERED	13
+#define ICMP_PREC_VIOLATION	14
+#define ICMP_PREC_CUTOFF	15
+#define NR_ICMP_UNREACH		15
+
+#define ICMP_REDIR_NET		0
+#define ICMP_REDIR_HOST		1
+#define ICMP_REDIR_NETTOS	2
+#define ICMP_REDIR_HOSTTOS	3
+
+#define ICMP_EXC_TTL		0
+#define ICMP_EXC_FRAGTIME	1
+
+
+struct icmp_ra_addr {
+	uint32_t ira_addr;
+	uint32_t ira_preference;
+};
+
+struct icmp {
+	uint8_t  icmp_type;
+	uint8_t  icmp_code;
+	uint16_t icmp_cksum;
+	union {
+		uint8_t ih_pptr;
+		struct in_addr ih_gwaddr;
+		struct ih_idseq {
+			uint16_t icd_id;
+			uint16_t icd_seq;
+		} ih_idseq;
+		uint32_t ih_void;
+
+		struct ih_pmtu {
+			uint16_t ipm_void;
+			uint16_t ipm_nextmtu;
+		} ih_pmtu;
+
+		struct ih_rtradv {
+			uint8_t irt_num_addrs;
+			uint8_t irt_wpa;
+			uint16_t irt_lifetime;
+		} ih_rtradv;
+	} icmp_hun;
+	union {
+		struct {
+			uint32_t its_otime;
+			uint32_t its_rtime;
+			uint32_t its_ttime;
+		} id_ts;
+		struct {
+			struct ip idi_ip;
+		} id_ip;
+		struct icmp_ra_addr id_radv;
+		uint32_t   id_mask;
+		uint8_t    id_data[1];
+	} icmp_dun;
+};
+
+#define	icmp_pptr	icmp_hun.ih_pptr
+#define	icmp_gwaddr	icmp_hun.ih_gwaddr
+#define	icmp_id		icmp_hun.ih_idseq.icd_id
+#define	icmp_seq	icmp_hun.ih_idseq.icd_seq
+#define	icmp_void	icmp_hun.ih_void
+#define	icmp_pmvoid	icmp_hun.ih_pmtu.ipm_void
+#define	icmp_nextmtu	icmp_hun.ih_pmtu.ipm_nextmtu
+#define	icmp_num_addrs	icmp_hun.ih_rtradv.irt_num_addrs
+#define	icmp_wpa	icmp_hun.ih_rtradv.irt_wpa
+#define	icmp_lifetime	icmp_hun.ih_rtradv.irt_lifetime
+#define	icmp_otime	icmp_dun.id_ts.its_otime
+#define	icmp_rtime	icmp_dun.id_ts.its_rtime
+#define	icmp_ttime	icmp_dun.id_ts.its_ttime
+#define	icmp_ip		icmp_dun.id_ip.idi_ip
+#define	icmp_radv	icmp_dun.id_radv
+#define	icmp_mask	icmp_dun.id_mask
+#define	icmp_data	icmp_dun.id_data
+
+#define	ICMP_MINLEN	8
+#define	ICMP_TSLEN	(8 + 3 * sizeof (n_time))
+#define	ICMP_MASKLEN	12
+#define	ICMP_ADVLENMIN	(8 + sizeof (struct ip) + 8)
+#define	ICMP_ADVLEN(p)	(8 + ((p)->icmp_ip.ip_hl << 2) + 8)
+
+#define	ICMP_UNREACH		3
+#define	ICMP_SOURCEQUENCH	4
+#define	ICMP_ROUTERADVERT	9
+#define	ICMP_ROUTERSOLICIT	10
+#define	ICMP_TIMXCEED		11
+#define	ICMP_PARAMPROB		12
+#define	ICMP_TSTAMP		13
+#define	ICMP_TSTAMPREPLY	14
+#define	ICMP_IREQ		15
+#define	ICMP_IREQREPLY		16
+#define	ICMP_MASKREQ		17
+#define	ICMP_MASKREPLY		18
+#define	ICMP_MAXTYPE		18
+
+#define	ICMP_UNREACH_NET	        0
+#define	ICMP_UNREACH_HOST	        1
+#define	ICMP_UNREACH_PROTOCOL	        2
+#define	ICMP_UNREACH_PORT	        3
+#define	ICMP_UNREACH_NEEDFRAG	        4
+#define	ICMP_UNREACH_SRCFAIL	        5
+#define	ICMP_UNREACH_NET_UNKNOWN        6
+#define	ICMP_UNREACH_HOST_UNKNOWN       7
+#define	ICMP_UNREACH_ISOLATED	        8
+#define	ICMP_UNREACH_NET_PROHIB	        9
+#define	ICMP_UNREACH_HOST_PROHIB        10
+#define	ICMP_UNREACH_TOSNET	        11
+#define	ICMP_UNREACH_TOSHOST	        12
+#define	ICMP_UNREACH_FILTER_PROHIB      13
+#define	ICMP_UNREACH_HOST_PRECEDENCE    14
+#define	ICMP_UNREACH_PRECEDENCE_CUTOFF  15
+
+#define	ICMP_REDIRECT_NET	0
+#define	ICMP_REDIRECT_HOST	1
+#define	ICMP_REDIRECT_TOSNET	2
+#define	ICMP_REDIRECT_TOSHOST	3
+
+#define	ICMP_TIMXCEED_INTRANS	0
+#define	ICMP_TIMXCEED_REASS	1
+
+#define	ICMP_PARAMPROB_OPTABSENT 1
+
+#define	ICMP_INFOTYPE(type) \
+	((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
+	(type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
+	(type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
+	(type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
+	(type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/tcp.h b/libc-top-half/musl/include/netinet/tcp.h
new file mode 100644
index 0000000..fad1d84
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/tcp.h
@@ -0,0 +1,305 @@
+#ifndef _NETINET_TCP_H
+#define _NETINET_TCP_H
+
+#include <features.h>
+
+#define TCP_NODELAY 1
+#define TCP_MAXSEG	 2
+#define TCP_CORK	 3
+#define TCP_KEEPIDLE	 4
+#define TCP_KEEPINTVL	 5
+#define TCP_KEEPCNT	 6
+#define TCP_SYNCNT	 7
+#define TCP_LINGER2	 8
+#define TCP_DEFER_ACCEPT 9
+#define TCP_WINDOW_CLAMP 10
+#define TCP_INFO	 11
+#define	TCP_QUICKACK	 12
+#define TCP_CONGESTION	 13
+#define TCP_MD5SIG	 14
+#define TCP_THIN_LINEAR_TIMEOUTS 16
+#define TCP_THIN_DUPACK  17
+#define TCP_USER_TIMEOUT 18
+#define TCP_REPAIR       19
+#define TCP_REPAIR_QUEUE 20
+#define TCP_QUEUE_SEQ    21
+#define TCP_REPAIR_OPTIONS 22
+#define TCP_FASTOPEN     23
+#define TCP_TIMESTAMP    24
+#define TCP_NOTSENT_LOWAT 25
+#define TCP_CC_INFO      26
+#define TCP_SAVE_SYN     27
+#define TCP_SAVED_SYN    28
+#define TCP_REPAIR_WINDOW 29
+#define TCP_FASTOPEN_CONNECT 30
+#define TCP_ULP          31
+#define TCP_MD5SIG_EXT   32
+#define TCP_FASTOPEN_KEY 33
+#define TCP_FASTOPEN_NO_COOKIE 34
+#define TCP_ZEROCOPY_RECEIVE   35
+#define TCP_INQ          36
+#define TCP_TX_DELAY     37
+
+#define TCP_CM_INQ TCP_INQ
+
+#define TCP_ESTABLISHED  1
+#define TCP_SYN_SENT     2
+#define TCP_SYN_RECV     3
+#define TCP_FIN_WAIT1    4
+#define TCP_FIN_WAIT2    5
+#define TCP_TIME_WAIT    6
+#define TCP_CLOSE        7
+#define TCP_CLOSE_WAIT   8
+#define TCP_LAST_ACK     9
+#define TCP_LISTEN       10
+#define TCP_CLOSING      11
+
+enum {
+	TCP_NLA_PAD,
+	TCP_NLA_BUSY,
+	TCP_NLA_RWND_LIMITED,
+	TCP_NLA_SNDBUF_LIMITED,
+	TCP_NLA_DATA_SEGS_OUT,
+	TCP_NLA_TOTAL_RETRANS,
+	TCP_NLA_PACING_RATE,
+	TCP_NLA_DELIVERY_RATE,
+	TCP_NLA_SND_CWND,
+	TCP_NLA_REORDERING,
+	TCP_NLA_MIN_RTT,
+	TCP_NLA_RECUR_RETRANS,
+	TCP_NLA_DELIVERY_RATE_APP_LMT,
+	TCP_NLA_SNDQ_SIZE,
+	TCP_NLA_CA_STATE,
+	TCP_NLA_SND_SSTHRESH,
+	TCP_NLA_DELIVERED,
+	TCP_NLA_DELIVERED_CE,
+	TCP_NLA_BYTES_SENT,
+	TCP_NLA_BYTES_RETRANS,
+	TCP_NLA_DSACK_DUPS,
+	TCP_NLA_REORD_SEEN,
+	TCP_NLA_SRTT,
+	TCP_NLA_TIMEOUT_REHASH,
+	TCP_NLA_BYTES_NOTSENT,
+	TCP_NLA_EDT,
+	TCP_NLA_TTL,
+};
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define TCPOPT_EOL              0
+#define TCPOPT_NOP              1
+#define TCPOPT_MAXSEG           2
+#define TCPOPT_WINDOW           3
+#define TCPOPT_SACK_PERMITTED   4
+#define TCPOPT_SACK             5
+#define TCPOPT_TIMESTAMP        8
+#define TCPOLEN_SACK_PERMITTED  2
+#define TCPOLEN_WINDOW          3
+#define TCPOLEN_MAXSEG          4
+#define TCPOLEN_TIMESTAMP       10
+
+#define SOL_TCP 6
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdint.h>
+
+typedef uint32_t tcp_seq;
+
+#define TH_FIN 0x01
+#define TH_SYN 0x02
+#define TH_RST 0x04
+#define TH_PUSH 0x08
+#define TH_ACK 0x10
+#define TH_URG 0x20
+
+struct tcphdr {
+#ifdef _GNU_SOURCE
+#ifdef __GNUC__
+	__extension__
+#endif
+	union { struct {
+
+	uint16_t source;
+	uint16_t dest;
+	uint32_t seq;
+	uint32_t ack_seq;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	uint16_t res1:4;
+	uint16_t doff:4;
+	uint16_t fin:1;
+	uint16_t syn:1;
+	uint16_t rst:1;
+	uint16_t psh:1;
+	uint16_t ack:1;
+	uint16_t urg:1;
+	uint16_t res2:2;
+#else
+	uint16_t doff:4;
+	uint16_t res1:4;
+	uint16_t res2:2;
+	uint16_t urg:1;
+	uint16_t ack:1;
+	uint16_t psh:1;
+	uint16_t rst:1;
+	uint16_t syn:1;
+	uint16_t fin:1;
+#endif
+	uint16_t window;
+	uint16_t check;
+	uint16_t urg_ptr;
+
+	}; struct {
+#endif
+
+	uint16_t th_sport;
+	uint16_t th_dport;
+	uint32_t th_seq;
+	uint32_t th_ack;
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+	uint8_t th_x2:4;
+	uint8_t th_off:4;
+#else
+	uint8_t th_off:4;
+	uint8_t th_x2:4;
+#endif
+	uint8_t th_flags;
+	uint16_t th_win;
+	uint16_t th_sum;
+	uint16_t th_urp;
+
+#ifdef _GNU_SOURCE
+	}; };
+#endif
+};
+#endif
+
+#ifdef _GNU_SOURCE
+#define TCPI_OPT_TIMESTAMPS	1
+#define TCPI_OPT_SACK		2
+#define TCPI_OPT_WSCALE		4
+#define TCPI_OPT_ECN		8
+
+#define TCP_CA_Open		0
+#define TCP_CA_Disorder		1
+#define TCP_CA_CWR		2
+#define TCP_CA_Recovery		3
+#define TCP_CA_Loss		4
+
+enum tcp_fastopen_client_fail {
+	TFO_STATUS_UNSPEC,
+	TFO_COOKIE_UNAVAILABLE,
+	TFO_DATA_NOT_ACKED,
+	TFO_SYN_RETRANSMITTED,
+};
+
+struct tcp_info {
+	uint8_t tcpi_state;
+	uint8_t tcpi_ca_state;
+	uint8_t tcpi_retransmits;
+	uint8_t tcpi_probes;
+	uint8_t tcpi_backoff;
+	uint8_t tcpi_options;
+	uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
+	uint8_t tcpi_delivery_rate_app_limited : 1, tcpi_fastopen_client_fail : 2;
+	uint32_t tcpi_rto;
+	uint32_t tcpi_ato;
+	uint32_t tcpi_snd_mss;
+	uint32_t tcpi_rcv_mss;
+	uint32_t tcpi_unacked;
+	uint32_t tcpi_sacked;
+	uint32_t tcpi_lost;
+	uint32_t tcpi_retrans;
+	uint32_t tcpi_fackets;
+	uint32_t tcpi_last_data_sent;
+	uint32_t tcpi_last_ack_sent;
+	uint32_t tcpi_last_data_recv;
+	uint32_t tcpi_last_ack_recv;
+	uint32_t tcpi_pmtu;
+	uint32_t tcpi_rcv_ssthresh;
+	uint32_t tcpi_rtt;
+	uint32_t tcpi_rttvar;
+	uint32_t tcpi_snd_ssthresh;
+	uint32_t tcpi_snd_cwnd;
+	uint32_t tcpi_advmss;
+	uint32_t tcpi_reordering;
+	uint32_t tcpi_rcv_rtt;
+	uint32_t tcpi_rcv_space;
+	uint32_t tcpi_total_retrans;
+	uint64_t tcpi_pacing_rate;
+	uint64_t tcpi_max_pacing_rate;
+	uint64_t tcpi_bytes_acked;
+	uint64_t tcpi_bytes_received;
+	uint32_t tcpi_segs_out;
+	uint32_t tcpi_segs_in;
+	uint32_t tcpi_notsent_bytes;
+	uint32_t tcpi_min_rtt;
+	uint32_t tcpi_data_segs_in;
+	uint32_t tcpi_data_segs_out;
+	uint64_t tcpi_delivery_rate;
+	uint64_t tcpi_busy_time;
+	uint64_t tcpi_rwnd_limited;
+	uint64_t tcpi_sndbuf_limited;
+	uint32_t tcpi_delivered;
+	uint32_t tcpi_delivered_ce;
+	uint64_t tcpi_bytes_sent;
+	uint64_t tcpi_bytes_retrans;
+	uint32_t tcpi_dsack_dups;
+	uint32_t tcpi_reord_seen;
+	uint32_t tcpi_rcv_ooopack;
+	uint32_t tcpi_snd_wnd;
+};
+
+#define TCP_MD5SIG_MAXKEYLEN    80
+
+#define TCP_MD5SIG_FLAG_PREFIX  0x1
+#define TCP_MD5SIG_FLAG_IFINDEX 0x2
+
+struct tcp_md5sig {
+	struct sockaddr_storage tcpm_addr;
+	uint8_t tcpm_flags;
+	uint8_t tcpm_prefixlen;
+	uint16_t tcpm_keylen;
+	int tcpm_ifindex;
+	uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
+};
+
+struct tcp_diag_md5sig {
+	uint8_t tcpm_family;
+	uint8_t tcpm_prefixlen;
+	uint16_t tcpm_keylen;
+	uint32_t tcpm_addr[4];
+	uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
+};
+
+#define TCP_REPAIR_ON		1
+#define TCP_REPAIR_OFF		0
+#define TCP_REPAIR_OFF_NO_WP	-1
+
+struct tcp_repair_window {
+	uint32_t snd_wl1;
+	uint32_t snd_wnd;
+	uint32_t max_window;
+	uint32_t rcv_wnd;
+	uint32_t rcv_wup;
+};
+
+#define TCP_RECEIVE_ZEROCOPY_FLAG_TLB_CLEAN_HINT 0x1
+
+struct tcp_zerocopy_receive {
+	uint64_t address;
+	uint32_t length;
+	uint32_t recv_skip_hint;
+	uint32_t inq;
+	int32_t err;
+	uint64_t copybuf_address;
+	int32_t copybuf_len;
+	uint32_t flags;
+	uint64_t msg_control;
+	uint64_t msg_controllen;
+	uint32_t msg_flags;
+	uint32_t reserved;
+};
+
+#endif
+
+#endif
diff --git a/libc-top-half/musl/include/netinet/udp.h b/libc-top-half/musl/include/netinet/udp.h
new file mode 100644
index 0000000..40c3f20
--- /dev/null
+++ b/libc-top-half/musl/include/netinet/udp.h
@@ -0,0 +1,46 @@
+#ifndef _NETINET_UDP_H
+#define _NETINET_UDP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+#include <stdint.h>
+
+#ifdef _GNU_SOURCE
+#define uh_sport source
+#define uh_dport dest
+#define uh_ulen len
+#define uh_sum check
+#endif
+
+struct udphdr {
+	uint16_t uh_sport;
+	uint16_t uh_dport;
+	uint16_t uh_ulen;
+	uint16_t uh_sum;
+};
+
+#define UDP_CORK	1
+#define UDP_ENCAP	100
+#define UDP_NO_CHECK6_TX 101
+#define UDP_NO_CHECK6_RX 102
+#define UDP_SEGMENT	103
+#define UDP_GRO		104
+
+#define UDP_ENCAP_ESPINUDP_NON_IKE 1
+#define UDP_ENCAP_ESPINUDP	2
+#define UDP_ENCAP_L2TPINUDP	3
+#define UDP_ENCAP_GTP0		4
+#define UDP_ENCAP_GTP1U		5
+#define UDP_ENCAP_RXRPC		6
+#define TCP_ENCAP_ESPINTCP	7
+
+#define SOL_UDP            17
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif