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-rw-r--r--tc/m_pedit.c869
1 files changed, 869 insertions, 0 deletions
diff --git a/tc/m_pedit.c b/tc/m_pedit.c
new file mode 100644
index 0000000..54949e4
--- /dev/null
+++ b/tc/m_pedit.c
@@ -0,0 +1,869 @@
+/*
+ * m_pedit.c generic packet editor actions module
+ *
+ * This program is free software; you can distribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * Authors: J Hadi Salim (hadi@cyberus.ca)
+ *
+ * TODO:
+ * 1) Big endian broken in some spots
+ * 2) A lot of this stuff was added on the fly; get a big double-double
+ * and clean it up at some point.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <string.h>
+#include <dlfcn.h>
+#include "utils.h"
+#include "tc_util.h"
+#include "m_pedit.h"
+#include "rt_names.h"
+
+static struct m_pedit_util *pedit_list;
+static int pedit_debug;
+
+static void explain(void)
+{
+ fprintf(stderr,
+ "Usage: ... pedit munge [ex] <MUNGE> [CONTROL]\n"
+ "Where: MUNGE := <RAW>|<LAYERED>\n"
+ "\t<RAW>:= <OFFSETC>[ATC]<CMD>\n \t\tOFFSETC:= offset <offval> <u8|u16|u32>\n"
+ "\t\tATC:= at <atval> offmask <maskval> shift <shiftval>\n"
+ "\t\tNOTE: offval is byte offset, must be multiple of 4\n"
+ "\t\tNOTE: maskval is a 32 bit hex number\n \t\tNOTE: shiftval is a shift value\n"
+ "\t\tCMD:= clear | invert | set <setval> | add <addval> | decrement | retain\n"
+ "\t<LAYERED>:= ip <ipdata> | ip6 <ip6data>\n"
+ " \t\t| udp <udpdata> | tcp <tcpdata> | icmp <icmpdata>\n"
+ "\tCONTROL:= reclassify | pipe | drop | continue | pass |\n"
+ "\t goto chain <CHAIN_INDEX>\n"
+ "\tNOTE: if 'ex' is set, extended functionality will be supported (kernel >= 4.11)\n"
+ "For Example usage look at the examples directory\n");
+
+}
+
+static void usage(void)
+{
+ explain();
+ exit(-1);
+}
+
+static int pedit_parse_nopopt(int *argc_p, char ***argv_p,
+ struct m_pedit_sel *sel,
+ struct m_pedit_key *tkey)
+{
+ int argc = *argc_p;
+ char **argv = *argv_p;
+
+ if (argc) {
+ fprintf(stderr,
+ "Unknown action hence option \"%s\" is unparsable\n",
+ *argv);
+ return -1;
+ }
+
+ return 0;
+
+}
+
+static struct m_pedit_util *get_pedit_kind(const char *str)
+{
+ static void *pBODY;
+ void *dlh;
+ char buf[256];
+ struct m_pedit_util *p;
+
+ for (p = pedit_list; p; p = p->next) {
+ if (strcmp(p->id, str) == 0)
+ return p;
+ }
+
+ snprintf(buf, sizeof(buf), "p_%s.so", str);
+ dlh = dlopen(buf, RTLD_LAZY);
+ if (dlh == NULL) {
+ dlh = pBODY;
+ if (dlh == NULL) {
+ dlh = pBODY = dlopen(NULL, RTLD_LAZY);
+ if (dlh == NULL)
+ goto noexist;
+ }
+ }
+
+ snprintf(buf, sizeof(buf), "p_pedit_%s", str);
+ p = dlsym(dlh, buf);
+ if (p == NULL)
+ goto noexist;
+
+reg:
+ p->next = pedit_list;
+ pedit_list = p;
+ return p;
+
+noexist:
+ p = calloc(1, sizeof(*p));
+ if (p) {
+ strlcpy(p->id, str, sizeof(p->id));
+ p->parse_peopt = pedit_parse_nopopt;
+ goto reg;
+ }
+ return p;
+}
+
+static int pack_key(struct m_pedit_sel *_sel, struct m_pedit_key *tkey)
+{
+ struct tc_pedit_sel *sel = &_sel->sel;
+ struct m_pedit_key_ex *keys_ex = _sel->keys_ex;
+ int hwm = sel->nkeys;
+
+ if (hwm >= MAX_OFFS)
+ return -1;
+
+ if (tkey->off % 4) {
+ fprintf(stderr, "offsets MUST be in 32 bit boundaries\n");
+ return -1;
+ }
+
+ sel->keys[hwm].val = tkey->val;
+ sel->keys[hwm].mask = tkey->mask;
+ sel->keys[hwm].off = tkey->off;
+ sel->keys[hwm].at = tkey->at;
+ sel->keys[hwm].offmask = tkey->offmask;
+ sel->keys[hwm].shift = tkey->shift;
+
+ if (_sel->extended) {
+ keys_ex[hwm].htype = tkey->htype;
+ keys_ex[hwm].cmd = tkey->cmd;
+ } else {
+ if (tkey->htype != TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK ||
+ tkey->cmd != TCA_PEDIT_KEY_EX_CMD_SET) {
+ fprintf(stderr,
+ "Munge parameters not supported. Use 'pedit ex munge ...'.\n");
+ return -1;
+ }
+ }
+
+ sel->nkeys++;
+ return 0;
+}
+
+static int pack_key32(__u32 retain, struct m_pedit_sel *sel,
+ struct m_pedit_key *tkey)
+{
+ if (tkey->off > (tkey->off & ~3)) {
+ fprintf(stderr,
+ "pack_key32: 32 bit offsets must begin in 32bit boundaries\n");
+ return -1;
+ }
+
+ tkey->val = htonl(tkey->val & retain);
+ tkey->mask = htonl(tkey->mask | ~retain);
+ return pack_key(sel, tkey);
+}
+
+static int pack_key16(__u32 retain, struct m_pedit_sel *sel,
+ struct m_pedit_key *tkey)
+{
+ int ind, stride;
+ __u32 m[4] = { 0x0000FFFF, 0xFF0000FF, 0xFFFF0000 };
+
+ if (tkey->val > 0xFFFF || tkey->mask > 0xFFFF) {
+ fprintf(stderr, "pack_key16 bad value\n");
+ return -1;
+ }
+
+ ind = tkey->off & 3;
+
+ if (ind == 3) {
+ fprintf(stderr, "pack_key16 bad index value %d\n", ind);
+ return -1;
+ }
+
+ stride = 8 * (2 - ind);
+ tkey->val = htonl((tkey->val & retain) << stride);
+ tkey->mask = htonl(((tkey->mask | ~retain) << stride) | m[ind]);
+
+ tkey->off &= ~3;
+
+ if (pedit_debug)
+ printf("pack_key16: Final val %08x mask %08x\n",
+ tkey->val, tkey->mask);
+ return pack_key(sel, tkey);
+}
+
+static int pack_key8(__u32 retain, struct m_pedit_sel *sel,
+ struct m_pedit_key *tkey)
+{
+ int ind, stride;
+ __u32 m[4] = { 0x00FFFFFF, 0xFF00FFFF, 0xFFFF00FF, 0xFFFFFF00 };
+
+ if (tkey->val > 0xFF || tkey->mask > 0xFF) {
+ fprintf(stderr, "pack_key8 bad value (val %x mask %x\n",
+ tkey->val, tkey->mask);
+ return -1;
+ }
+
+ ind = tkey->off & 3;
+
+ stride = 8 * (3 - ind);
+ tkey->val = htonl((tkey->val & retain) << stride);
+ tkey->mask = htonl(((tkey->mask | ~retain) << stride) | m[ind]);
+
+ tkey->off &= ~3;
+
+ if (pedit_debug)
+ printf("pack_key8: Final word off %d val %08x mask %08x\n",
+ tkey->off, tkey->val, tkey->mask);
+ return pack_key(sel, tkey);
+}
+
+static int pack_mac(struct m_pedit_sel *sel, struct m_pedit_key *tkey,
+ __u8 *mac)
+{
+ int ret = 0;
+
+ if (!(tkey->off & 0x3)) {
+ tkey->mask = 0;
+ tkey->val = ntohl(*((__u32 *)mac));
+ ret |= pack_key32(~0, sel, tkey);
+
+ tkey->off += 4;
+ tkey->mask = 0;
+ tkey->val = ntohs(*((__u16 *)&mac[4]));
+ ret |= pack_key16(~0, sel, tkey);
+ } else if (!(tkey->off & 0x1)) {
+ tkey->mask = 0;
+ tkey->val = ntohs(*((__u16 *)mac));
+ ret |= pack_key16(~0, sel, tkey);
+
+ tkey->off += 4;
+ tkey->mask = 0;
+ tkey->val = ntohl(*((__u32 *)(mac + 2)));
+ ret |= pack_key32(~0, sel, tkey);
+ } else {
+ fprintf(stderr,
+ "pack_mac: mac offsets must begin in 32bit or 16bit boundaries\n");
+ return -1;
+ }
+
+ return ret;
+}
+
+static int pack_ipv6(struct m_pedit_sel *sel, struct m_pedit_key *tkey,
+ __u32 *ipv6)
+{
+ int ret = 0;
+ int i;
+
+ if (tkey->off & 0x3) {
+ fprintf(stderr,
+ "pack_ipv6: IPv6 offsets must begin in 32bit boundaries\n");
+ return -1;
+ }
+
+ for (i = 0; i < 4; i++) {
+ tkey->mask = 0;
+ tkey->val = ntohl(ipv6[i]);
+
+ ret = pack_key32(~0, sel, tkey);
+ if (ret)
+ return ret;
+
+ tkey->off += 4;
+ }
+
+ return 0;
+}
+
+static int parse_val(int *argc_p, char ***argv_p, __u32 *val, int type)
+{
+ int argc = *argc_p;
+ char **argv = *argv_p;
+
+ if (argc <= 0)
+ return -1;
+
+ if (type == TINT)
+ return get_integer((int *)val, *argv, 0);
+
+ if (type == TU32)
+ return get_u32(val, *argv, 0);
+
+ if (type == TIPV4) {
+ inet_prefix addr;
+
+ if (get_prefix_1(&addr, *argv, AF_INET))
+ return -1;
+
+ *val = addr.data[0];
+ return 0;
+ }
+
+ if (type == TIPV6) {
+ inet_prefix addr;
+
+ if (get_prefix_1(&addr, *argv, AF_INET6))
+ return -1;
+
+ memcpy(val, addr.data, addr.bytelen);
+
+ return 0;
+ }
+
+ if (type == TMAC) {
+#define MAC_ALEN 6
+ int ret = ll_addr_a2n((char *)val, MAC_ALEN, *argv);
+
+ if (ret == MAC_ALEN)
+ return 0;
+ }
+
+ return -1;
+}
+
+int parse_cmd(int *argc_p, char ***argv_p, __u32 len, int type, __u32 retain,
+ struct m_pedit_sel *sel, struct m_pedit_key *tkey, int flags)
+{
+ __u32 mask[4] = { 0 };
+ __u32 val[4] = { 0 };
+ __u32 *m = &mask[0];
+ __u32 *v = &val[0];
+ __u32 o = 0xFF;
+ int res = -1;
+ int argc = *argc_p;
+ char **argv = *argv_p;
+
+ if (argc <= 0)
+ return -1;
+
+ if (pedit_debug)
+ printf("parse_cmd argc %d %s offset %d length %d\n",
+ argc, *argv, tkey->off, len);
+
+ if (len == 2)
+ o = 0xFFFF;
+ if (len == 4)
+ o = 0xFFFFFFFF;
+
+ if (matches(*argv, "invert") == 0) {
+ *v = *m = o;
+ } else if (matches(*argv, "set") == 0 ||
+ matches(*argv, "add") == 0) {
+ if (matches(*argv, "add") == 0)
+ tkey->cmd = TCA_PEDIT_KEY_EX_CMD_ADD;
+
+ if (!sel->extended && tkey->cmd)
+ goto non_ext_only_set_cmd;
+
+ NEXT_ARG();
+ if (parse_val(&argc, &argv, val, type))
+ return -1;
+ } else if (matches(*argv, "decrement") == 0) {
+ if ((flags & PEDIT_ALLOW_DEC) == 0) {
+ fprintf(stderr,
+ "decrement command is not supported for this field\n");
+ return -1;
+ }
+
+ if (!sel->extended)
+ goto non_ext_only_set_cmd;
+
+ tkey->cmd = TCA_PEDIT_KEY_EX_CMD_ADD;
+ *v = retain; /* decrement by overflow */
+ } else if (matches(*argv, "preserve") == 0) {
+ retain = 0;
+ } else {
+ if (matches(*argv, "clear") != 0)
+ return -1;
+ }
+
+ argc--;
+ argv++;
+
+ if (argc && matches(*argv, "retain") == 0) {
+ NEXT_ARG();
+ if (parse_val(&argc, &argv, &retain, TU32))
+ return -1;
+ argc--;
+ argv++;
+ }
+
+ if (len > 4 && retain != ~0) {
+ fprintf(stderr,
+ "retain is not supported for fields longer the 32 bits\n");
+ return -1;
+ }
+
+ if (type == TMAC) {
+ res = pack_mac(sel, tkey, (__u8 *)val);
+ goto done;
+ }
+
+ if (type == TIPV6) {
+ res = pack_ipv6(sel, tkey, val);
+ goto done;
+ }
+
+ tkey->val = *v;
+ tkey->mask = *m;
+
+ if (type == TIPV4)
+ tkey->val = ntohl(tkey->val);
+
+ if (len == 1) {
+ res = pack_key8(retain, sel, tkey);
+ goto done;
+ }
+ if (len == 2) {
+ res = pack_key16(retain, sel, tkey);
+ goto done;
+ }
+ if (len == 4) {
+ res = pack_key32(retain, sel, tkey);
+ goto done;
+ }
+
+ return -1;
+done:
+ if (pedit_debug)
+ printf("parse_cmd done argc %d %s offset %d length %d\n",
+ argc, *argv, tkey->off, len);
+ *argc_p = argc;
+ *argv_p = argv;
+ return res;
+
+non_ext_only_set_cmd:
+ fprintf(stderr,
+ "Non extended mode. only 'set' command is supported\n");
+ return -1;
+}
+
+static int parse_offset(int *argc_p, char ***argv_p, struct m_pedit_sel *sel,
+ struct m_pedit_key *tkey)
+{
+ int off;
+ __u32 len, retain;
+ int argc = *argc_p;
+ char **argv = *argv_p;
+ int res = -1;
+
+ if (argc <= 0)
+ return -1;
+
+ if (get_integer(&off, *argv, 0))
+ return -1;
+ tkey->off = off;
+
+ argc--;
+ argv++;
+
+ if (argc <= 0)
+ return -1;
+
+ if (matches(*argv, "u32") == 0) {
+ len = 4;
+ retain = 0xFFFFFFFF;
+ goto done;
+ }
+ if (matches(*argv, "u16") == 0) {
+ len = 2;
+ retain = 0xffff;
+ goto done;
+ }
+ if (matches(*argv, "u8") == 0) {
+ len = 1;
+ retain = 0xff;
+ goto done;
+ }
+
+ return -1;
+
+done:
+
+ NEXT_ARG();
+
+ /* [at <someval> offmask <maskval> shift <shiftval>] */
+ if (matches(*argv, "at") == 0) {
+
+ __u32 atv = 0, offmask = 0x0, shift = 0;
+
+ NEXT_ARG();
+ if (get_u32(&atv, *argv, 0))
+ return -1;
+ tkey->at = atv;
+
+ NEXT_ARG();
+
+ if (get_u32(&offmask, *argv, 16))
+ return -1;
+ tkey->offmask = offmask;
+
+ NEXT_ARG();
+
+ if (get_u32(&shift, *argv, 0))
+ return -1;
+ tkey->shift = shift;
+
+ NEXT_ARG();
+ }
+
+ res = parse_cmd(&argc, &argv, len, TU32, retain, sel, tkey, 0);
+
+ *argc_p = argc;
+ *argv_p = argv;
+ return res;
+}
+
+static int parse_munge(int *argc_p, char ***argv_p, struct m_pedit_sel *sel)
+{
+ struct m_pedit_key tkey = {};
+ int argc = *argc_p;
+ char **argv = *argv_p;
+ int res = -1;
+
+ if (argc <= 0)
+ return -1;
+
+ if (matches(*argv, "offset") == 0) {
+ NEXT_ARG();
+ res = parse_offset(&argc, &argv, sel, &tkey);
+ goto done;
+ } else {
+ char k[FILTER_NAMESZ];
+ struct m_pedit_util *p = NULL;
+
+ strncpy(k, *argv, sizeof(k) - 1);
+
+ if (argc > 0) {
+ p = get_pedit_kind(k);
+ if (p == NULL)
+ goto bad_val;
+ NEXT_ARG();
+ res = p->parse_peopt(&argc, &argv, sel, &tkey);
+ if (res < 0) {
+ fprintf(stderr, "bad pedit parsing\n");
+ goto bad_val;
+ }
+ goto done;
+ }
+ }
+
+bad_val:
+ return -1;
+
+done:
+
+ *argc_p = argc;
+ *argv_p = argv;
+ return res;
+}
+
+static int pedit_keys_ex_getattr(struct rtattr *attr,
+ struct m_pedit_key_ex *keys_ex, int n)
+{
+ struct rtattr *i;
+ int rem = RTA_PAYLOAD(attr);
+ struct rtattr *tb[TCA_PEDIT_KEY_EX_MAX + 1];
+ struct m_pedit_key_ex *k = keys_ex;
+
+ for (i = RTA_DATA(attr); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
+ if (!n)
+ return -1;
+
+ if (i->rta_type != TCA_PEDIT_KEY_EX)
+ return -1;
+
+ parse_rtattr_nested(tb, TCA_PEDIT_KEY_EX_MAX, i);
+
+ k->htype = rta_getattr_u16(tb[TCA_PEDIT_KEY_EX_HTYPE]);
+ k->cmd = rta_getattr_u16(tb[TCA_PEDIT_KEY_EX_CMD]);
+
+ k++;
+ n--;
+ }
+
+ return !!n;
+}
+
+static int pedit_keys_ex_addattr(struct m_pedit_sel *sel, struct nlmsghdr *n)
+{
+ struct m_pedit_key_ex *k = sel->keys_ex;
+ struct rtattr *keys_start;
+ int i;
+
+ if (!sel->extended)
+ return 0;
+
+ keys_start = addattr_nest(n, MAX_MSG, TCA_PEDIT_KEYS_EX | NLA_F_NESTED);
+
+ for (i = 0; i < sel->sel.nkeys; i++) {
+ struct rtattr *key_start;
+
+ key_start = addattr_nest(n, MAX_MSG,
+ TCA_PEDIT_KEY_EX | NLA_F_NESTED);
+
+ if (addattr16(n, MAX_MSG, TCA_PEDIT_KEY_EX_HTYPE, k->htype) ||
+ addattr16(n, MAX_MSG, TCA_PEDIT_KEY_EX_CMD, k->cmd)) {
+ return -1;
+ }
+
+ addattr_nest_end(n, key_start);
+
+ k++;
+ }
+
+ addattr_nest_end(n, keys_start);
+
+ return 0;
+}
+
+static int parse_pedit(struct action_util *a, int *argc_p, char ***argv_p,
+ int tca_id, struct nlmsghdr *n)
+{
+ struct m_pedit_sel sel = {};
+
+ int argc = *argc_p;
+ char **argv = *argv_p;
+ int ok = 0, iok = 0;
+ struct rtattr *tail;
+
+ while (argc > 0) {
+ if (pedit_debug > 1)
+ fprintf(stderr, "while pedit (%d:%s)\n", argc, *argv);
+ if (matches(*argv, "pedit") == 0) {
+ NEXT_ARG();
+ ok++;
+
+ if (matches(*argv, "ex") == 0) {
+ if (ok > 1) {
+ fprintf(stderr,
+ "'ex' must be before first 'munge'\n");
+ explain();
+ return -1;
+ }
+ sel.extended = true;
+ NEXT_ARG();
+ }
+
+ continue;
+ } else if (matches(*argv, "help") == 0) {
+ usage();
+ } else if (matches(*argv, "munge") == 0) {
+ if (!ok) {
+ fprintf(stderr, "Bad pedit construct (%s)\n",
+ *argv);
+ explain();
+ return -1;
+ }
+ NEXT_ARG();
+
+ if (parse_munge(&argc, &argv, &sel)) {
+ fprintf(stderr, "Bad pedit construct (%s)\n",
+ *argv);
+ explain();
+ return -1;
+ }
+ ok++;
+ } else {
+ break;
+ }
+
+ }
+
+ if (!ok) {
+ explain();
+ return -1;
+ }
+
+ parse_action_control_dflt(&argc, &argv, &sel.sel.action, false, TC_ACT_OK);
+
+ if (argc) {
+ if (matches(*argv, "index") == 0) {
+ NEXT_ARG();
+ if (get_u32(&sel.sel.index, *argv, 10)) {
+ fprintf(stderr, "Pedit: Illegal \"index\"\n");
+ return -1;
+ }
+ argc--;
+ argv++;
+ iok++;
+ }
+ }
+
+ tail = addattr_nest(n, MAX_MSG, tca_id);
+ if (!sel.extended) {
+ addattr_l(n, MAX_MSG, TCA_PEDIT_PARMS, &sel,
+ sizeof(sel.sel) +
+ sel.sel.nkeys * sizeof(struct tc_pedit_key));
+ } else {
+ addattr_l(n, MAX_MSG, TCA_PEDIT_PARMS_EX, &sel,
+ sizeof(sel.sel) +
+ sel.sel.nkeys * sizeof(struct tc_pedit_key));
+
+ pedit_keys_ex_addattr(&sel, n);
+ }
+
+ addattr_nest_end(n, tail);
+
+ *argc_p = argc;
+ *argv_p = argv;
+ return 0;
+}
+
+static const char * const pedit_htype_str[] = {
+ [TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK] = "",
+ [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = "eth",
+ [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = "ipv4",
+ [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = "ipv6",
+ [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = "tcp",
+ [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = "udp",
+};
+
+static int print_pedit_location(FILE *f,
+ enum pedit_header_type htype, __u32 off)
+{
+ char *buf = NULL;
+ int rc;
+
+ if (htype != TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
+ if (htype < ARRAY_SIZE(pedit_htype_str))
+ rc = asprintf(&buf, "%s", pedit_htype_str[htype]);
+ else
+ rc = asprintf(&buf, "unknown(%d)", htype);
+ if (rc < 0)
+ return rc;
+ print_string(PRINT_ANY, "htype", "%s", buf);
+ print_int(PRINT_ANY, "offset", "%+d", off);
+ } else {
+ print_string(PRINT_JSON, "htype", NULL, "network");
+ print_int(PRINT_ANY, "offset", "%d", off);
+ }
+
+ free(buf);
+ return 0;
+}
+
+static int print_pedit(struct action_util *au, FILE *f, struct rtattr *arg)
+{
+ struct tc_pedit_sel *sel;
+ struct rtattr *tb[TCA_PEDIT_MAX + 1];
+ struct m_pedit_key_ex *keys_ex = NULL;
+ int err;
+
+ print_string(PRINT_ANY, "kind", " %s ", "pedit");
+ if (arg == NULL)
+ return 0;
+
+ parse_rtattr_nested(tb, TCA_PEDIT_MAX, arg);
+
+ if (!tb[TCA_PEDIT_PARMS] && !tb[TCA_PEDIT_PARMS_EX]) {
+ fprintf(stderr, "Missing pedit parameters\n");
+ return -1;
+ }
+
+ if (tb[TCA_PEDIT_PARMS]) {
+ sel = RTA_DATA(tb[TCA_PEDIT_PARMS]);
+ } else {
+ int err;
+
+ sel = RTA_DATA(tb[TCA_PEDIT_PARMS_EX]);
+
+ if (!tb[TCA_PEDIT_KEYS_EX]) {
+ fprintf(f, "Netlink error\n");
+ return -1;
+ }
+
+ keys_ex = calloc(sel->nkeys, sizeof(*keys_ex));
+ if (!keys_ex) {
+ fprintf(f, "Out of memory\n");
+ return -1;
+ }
+
+ err = pedit_keys_ex_getattr(tb[TCA_PEDIT_KEYS_EX], keys_ex,
+ sel->nkeys);
+ if (err) {
+ fprintf(f, "Netlink error\n");
+
+ free(keys_ex);
+ return -1;
+ }
+ }
+
+ print_action_control(f, "action ", sel->action, " ");
+ print_uint(PRINT_ANY, "nkeys", "keys %d\n", sel->nkeys);
+ print_uint(PRINT_ANY, "index", " \t index %u", sel->index);
+ print_int(PRINT_ANY, "ref", " ref %d", sel->refcnt);
+ print_int(PRINT_ANY, "bind", " bind %d", sel->bindcnt);
+
+ if (show_stats) {
+ if (tb[TCA_PEDIT_TM]) {
+ struct tcf_t *tm = RTA_DATA(tb[TCA_PEDIT_TM]);
+
+ print_tm(f, tm);
+ }
+ }
+ open_json_array(PRINT_JSON, "keys");
+ if (sel->nkeys) {
+ int i;
+ struct tc_pedit_key *key = sel->keys;
+ struct m_pedit_key_ex *key_ex = keys_ex;
+
+ for (i = 0; i < sel->nkeys; i++, key++) {
+ enum pedit_header_type htype =
+ TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK;
+ enum pedit_cmd cmd = TCA_PEDIT_KEY_EX_CMD_SET;
+
+ if (keys_ex) {
+ htype = key_ex->htype;
+ cmd = key_ex->cmd;
+
+ key_ex++;
+ }
+
+ open_json_object(NULL);
+ print_uint(PRINT_FP, NULL, "\n\t key #%d at ", i);
+
+ err = print_pedit_location(f, htype, key->off);
+ if (err) {
+ free(keys_ex);
+ return err;
+ }
+
+ /* In FP, report the "set" command as "val" to keep
+ * backward compatibility. Report the true name in JSON.
+ */
+ print_string(PRINT_FP, NULL, ": %s",
+ cmd ? "add" : "val");
+ print_string(PRINT_JSON, "cmd", NULL,
+ cmd ? "add" : "set");
+ print_hex(PRINT_ANY, "val", " %08x",
+ (unsigned int)ntohl(key->val));
+ print_hex(PRINT_ANY, "mask", " mask %08x",
+ (unsigned int)ntohl(key->mask));
+ close_json_object();
+ }
+ } else {
+ fprintf(f, "\npedit %x keys %d is not LEGIT", sel->index,
+ sel->nkeys);
+ }
+ close_json_array(PRINT_JSON, " ");
+
+ print_nl();
+
+ free(keys_ex);
+ return 0;
+}
+
+struct action_util pedit_action_util = {
+ .id = "pedit",
+ .parse_aopt = parse_pedit,
+ .print_aopt = print_pedit,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-30 10:30:23 +0000