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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32_parse.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32_parse.h')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32_parse.h | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32_parse.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32_parse.h new file mode 100644 index 0000000000..f59dd4b2ae --- /dev/null +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32_parse.h @@ -0,0 +1,336 @@ +/* + * This file is part of the Chelsio T4 Ethernet driver for Linux. + * + * Copyright (c) 2016 Chelsio Communications, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef __CXGB4_TC_U32_PARSE_H +#define __CXGB4_TC_U32_PARSE_H + +struct cxgb4_match_field { + int off; /* Offset from the beginning of the header to match */ + /* Fill the value/mask pair in the spec if matched */ + int (*val)(struct ch_filter_specification *f, __be32 val, __be32 mask); +}; + +/* IPv4 match fields */ +static inline int cxgb4_fill_ipv4_tos(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + f->val.tos = (ntohl(val) >> 16) & 0x000000FF; + f->mask.tos = (ntohl(mask) >> 16) & 0x000000FF; + + return 0; +} + +static inline int cxgb4_fill_ipv4_frag(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + u32 mask_val; + u8 frag_val; + + frag_val = (ntohl(val) >> 13) & 0x00000007; + mask_val = ntohl(mask) & 0x0000FFFF; + + if (frag_val == 0x1 && mask_val != 0x3FFF) { /* MF set */ + f->val.frag = 1; + f->mask.frag = 1; + } else if (frag_val == 0x2 && mask_val != 0x3FFF) { /* DF set */ + f->val.frag = 0; + f->mask.frag = 1; + } else { + return -EINVAL; + } + + return 0; +} + +static inline int cxgb4_fill_ipv4_proto(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + f->val.proto = (ntohl(val) >> 16) & 0x000000FF; + f->mask.proto = (ntohl(mask) >> 16) & 0x000000FF; + + return 0; +} + +static inline int cxgb4_fill_ipv4_src_ip(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.fip[0], &val, sizeof(u32)); + memcpy(&f->mask.fip[0], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv4_dst_ip(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.lip[0], &val, sizeof(u32)); + memcpy(&f->mask.lip[0], &mask, sizeof(u32)); + + return 0; +} + +static const struct cxgb4_match_field cxgb4_ipv4_fields[] = { + { .off = 0, .val = cxgb4_fill_ipv4_tos }, + { .off = 4, .val = cxgb4_fill_ipv4_frag }, + { .off = 8, .val = cxgb4_fill_ipv4_proto }, + { .off = 12, .val = cxgb4_fill_ipv4_src_ip }, + { .off = 16, .val = cxgb4_fill_ipv4_dst_ip }, + { .val = NULL } +}; + +/* IPv6 match fields */ +static inline int cxgb4_fill_ipv6_tos(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + f->val.tos = (ntohl(val) >> 20) & 0x000000FF; + f->mask.tos = (ntohl(mask) >> 20) & 0x000000FF; + + return 0; +} + +static inline int cxgb4_fill_ipv6_proto(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + f->val.proto = (ntohl(val) >> 8) & 0x000000FF; + f->mask.proto = (ntohl(mask) >> 8) & 0x000000FF; + + return 0; +} + +static inline int cxgb4_fill_ipv6_src_ip0(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.fip[0], &val, sizeof(u32)); + memcpy(&f->mask.fip[0], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv6_src_ip1(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.fip[4], &val, sizeof(u32)); + memcpy(&f->mask.fip[4], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv6_src_ip2(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.fip[8], &val, sizeof(u32)); + memcpy(&f->mask.fip[8], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv6_src_ip3(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.fip[12], &val, sizeof(u32)); + memcpy(&f->mask.fip[12], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv6_dst_ip0(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.lip[0], &val, sizeof(u32)); + memcpy(&f->mask.lip[0], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv6_dst_ip1(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.lip[4], &val, sizeof(u32)); + memcpy(&f->mask.lip[4], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv6_dst_ip2(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.lip[8], &val, sizeof(u32)); + memcpy(&f->mask.lip[8], &mask, sizeof(u32)); + + return 0; +} + +static inline int cxgb4_fill_ipv6_dst_ip3(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + memcpy(&f->val.lip[12], &val, sizeof(u32)); + memcpy(&f->mask.lip[12], &mask, sizeof(u32)); + + return 0; +} + +static const struct cxgb4_match_field cxgb4_ipv6_fields[] = { + { .off = 0, .val = cxgb4_fill_ipv6_tos }, + { .off = 4, .val = cxgb4_fill_ipv6_proto }, + { .off = 8, .val = cxgb4_fill_ipv6_src_ip0 }, + { .off = 12, .val = cxgb4_fill_ipv6_src_ip1 }, + { .off = 16, .val = cxgb4_fill_ipv6_src_ip2 }, + { .off = 20, .val = cxgb4_fill_ipv6_src_ip3 }, + { .off = 24, .val = cxgb4_fill_ipv6_dst_ip0 }, + { .off = 28, .val = cxgb4_fill_ipv6_dst_ip1 }, + { .off = 32, .val = cxgb4_fill_ipv6_dst_ip2 }, + { .off = 36, .val = cxgb4_fill_ipv6_dst_ip3 }, + { .val = NULL } +}; + +/* TCP/UDP match */ +static inline int cxgb4_fill_l4_ports(struct ch_filter_specification *f, + __be32 val, __be32 mask) +{ + f->val.fport = ntohl(val) >> 16; + f->mask.fport = ntohl(mask) >> 16; + f->val.lport = ntohl(val) & 0x0000FFFF; + f->mask.lport = ntohl(mask) & 0x0000FFFF; + + return 0; +}; + +static const struct cxgb4_match_field cxgb4_tcp_fields[] = { + { .off = 0, .val = cxgb4_fill_l4_ports }, + { .val = NULL } +}; + +static const struct cxgb4_match_field cxgb4_udp_fields[] = { + { .off = 0, .val = cxgb4_fill_l4_ports }, + { .val = NULL } +}; + +struct cxgb4_next_header { + /* Offset, shift, and mask added to beginning of the header + * to get to next header. Useful when using a header + * field's value to jump to next header such as IHL field + * in IPv4 header. + */ + struct tc_u32_sel sel; + struct tc_u32_key key; + /* location of jump to make */ + const struct cxgb4_match_field *jump; +}; + +/* Accept a rule with a jump to transport layer header based on IHL field in + * IPv4 header. + */ +static const struct cxgb4_next_header cxgb4_ipv4_jumps[] = { + { + /* TCP Jump */ + .sel = { + .off = 0, + .offoff = 0, + .offshift = 6, + .offmask = cpu_to_be16(0x0f00), + }, + .key = { + .off = 8, + .val = cpu_to_be32(0x00060000), + .mask = cpu_to_be32(0x00ff0000), + }, + .jump = cxgb4_tcp_fields, + }, + { + /* UDP Jump */ + .sel = { + .off = 0, + .offoff = 0, + .offshift = 6, + .offmask = cpu_to_be16(0x0f00), + }, + .key = { + .off = 8, + .val = cpu_to_be32(0x00110000), + .mask = cpu_to_be32(0x00ff0000), + }, + .jump = cxgb4_udp_fields, + }, + { .jump = NULL }, +}; + +/* Accept a rule with a jump directly past the 40 Bytes of IPv6 fixed header + * to get to transport layer header. + */ +static const struct cxgb4_next_header cxgb4_ipv6_jumps[] = { + { + /* TCP Jump */ + .sel = { + .off = 40, + .offoff = 0, + .offshift = 0, + .offmask = 0, + }, + .key = { + .off = 4, + .val = cpu_to_be32(0x00000600), + .mask = cpu_to_be32(0x0000ff00), + }, + .jump = cxgb4_tcp_fields, + }, + { + /* UDP Jump */ + .sel = { + .off = 40, + .offoff = 0, + .offshift = 0, + .offmask = 0, + }, + .key = { + .off = 4, + .val = cpu_to_be32(0x00001100), + .mask = cpu_to_be32(0x0000ff00), + }, + .jump = cxgb4_udp_fields, + }, + { .jump = NULL }, +}; + +struct cxgb4_link { + const struct cxgb4_match_field *match_field; /* Next header */ + struct ch_filter_specification fs; /* Match spec associated with link */ + u32 link_handle; /* Knode handle associated with the link */ + unsigned long *tid_map; /* Bitmap for filter tids */ +}; + +struct cxgb4_tc_u32_table { + unsigned int size; /* number of entries in table */ + struct cxgb4_link table[]; /* Jump table */ +}; +#endif /* __CXGB4_TC_U32_PARSE_H */ |