X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lib%2Fflow.c;h=d90a7380e2bc5e04a20c3b089325de64b55e4ff1;hb=1dc6839d2dd4e672742114a2664f5130c3235f3d;hp=fa7ae4f178327fa681b05c5e37832037f313e5fd;hpb=deedf7e78b249383d6f7b385f9d04e08e33d0e3f;p=sliver-openvswitch.git diff --git a/lib/flow.c b/lib/flow.c index fa7ae4f17..d90a7380e 100644 --- a/lib/flow.c +++ b/lib/flow.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks. + * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. @@ -444,12 +444,13 @@ flow_zero_wildcards(struct flow *flow, const struct flow_wildcards *wildcards) const flow_wildcards_t wc = wildcards->wildcards; int i; - BUILD_ASSERT_DECL(FLOW_WC_SEQ == 7); + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); for (i = 0; i < FLOW_N_REGS; i++) { flow->regs[i] &= wildcards->reg_masks[i]; } flow->tun_id &= wildcards->tun_id_mask; + flow->metadata &= wildcards->metadata_mask; flow->nw_src &= wildcards->nw_src_mask; flow->nw_dst &= wildcards->nw_dst_mask; if (wc & FWW_IN_PORT) { @@ -459,22 +460,10 @@ flow_zero_wildcards(struct flow *flow, const struct flow_wildcards *wildcards) if (wc & FWW_DL_TYPE) { flow->dl_type = htons(0); } - if (wc & FWW_TP_SRC) { - flow->tp_src = htons(0); - } - if (wc & FWW_TP_DST) { - flow->tp_dst = htons(0); - } - if (wc & FWW_DL_SRC) { - memset(flow->dl_src, 0, sizeof flow->dl_src); - } - if (wc & FWW_DL_DST) { - flow->dl_dst[0] &= 0x01; - memset(&flow->dl_dst[1], 0, 5); - } - if (wc & FWW_ETH_MCAST) { - flow->dl_dst[0] &= 0xfe; - } + flow->tp_src &= wildcards->tp_src_mask; + flow->tp_dst &= wildcards->tp_dst_mask; + eth_addr_bitand(flow->dl_src, wildcards->dl_src_mask, flow->dl_src); + eth_addr_bitand(flow->dl_dst, wildcards->dl_dst_mask, flow->dl_dst); if (wc & FWW_NW_PROTO) { flow->nw_proto = 0; } @@ -501,12 +490,29 @@ flow_zero_wildcards(struct flow *flow, const struct flow_wildcards *wildcards) &wildcards->ipv6_src_mask); flow->ipv6_dst = ipv6_addr_bitand(&flow->ipv6_dst, &wildcards->ipv6_dst_mask); - if (wc & FWW_ND_TARGET) { - memset(&flow->nd_target, 0, sizeof flow->nd_target); - } + flow->nd_target = ipv6_addr_bitand(&flow->nd_target, + &wildcards->nd_target_mask); flow->skb_priority = 0; } +/* Initializes 'fmd' with the metadata found in 'flow'. */ +void +flow_get_metadata(const struct flow *flow, struct flow_metadata *fmd) +{ + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); + + fmd->tun_id = flow->tun_id; + fmd->tun_id_mask = htonll(UINT64_MAX); + + fmd->metadata = flow->metadata; + fmd->metadata_mask = htonll(UINT64_MAX); + + memcpy(fmd->regs, flow->regs, sizeof fmd->regs); + memset(fmd->reg_masks, 0xff, sizeof fmd->reg_masks); + + fmd->in_port = flow->in_port; +} + char * flow_to_string(const struct flow *flow) { @@ -518,41 +524,43 @@ flow_to_string(const struct flow *flow) void flow_format(struct ds *ds, const struct flow *flow) { - ds_put_format(ds, "priority%"PRIu32 - ":tunnel%#"PRIx64 - ":in_port%04"PRIx16, + ds_put_format(ds, "priority:%"PRIu32 + ",tunnel:%#"PRIx64 + ",metadata:%#"PRIx64 + ",in_port:%04"PRIx16, flow->skb_priority, ntohll(flow->tun_id), + ntohll(flow->metadata), flow->in_port); - ds_put_format(ds, ":tci("); + ds_put_format(ds, ",tci("); if (flow->vlan_tci) { - ds_put_format(ds, "vlan%"PRIu16",pcp%d", + ds_put_format(ds, "vlan:%"PRIu16",pcp:%d", vlan_tci_to_vid(flow->vlan_tci), vlan_tci_to_pcp(flow->vlan_tci)); } else { ds_put_char(ds, '0'); } - ds_put_format(ds, ") mac"ETH_ADDR_FMT"->"ETH_ADDR_FMT - " type%04"PRIx16, + ds_put_format(ds, ") mac("ETH_ADDR_FMT"->"ETH_ADDR_FMT + ") type:%04"PRIx16, ETH_ADDR_ARGS(flow->dl_src), ETH_ADDR_ARGS(flow->dl_dst), ntohs(flow->dl_type)); if (flow->dl_type == htons(ETH_TYPE_IPV6)) { - ds_put_format(ds, " label%#"PRIx32" proto%"PRIu8" tos%#"PRIx8 - " ttl%"PRIu8" ipv6", + ds_put_format(ds, " label:%#"PRIx32" proto:%"PRIu8" tos:%#"PRIx8 + " ttl:%"PRIu8" ipv6(", ntohl(flow->ipv6_label), flow->nw_proto, flow->nw_tos, flow->nw_ttl); print_ipv6_addr(ds, &flow->ipv6_src); ds_put_cstr(ds, "->"); print_ipv6_addr(ds, &flow->ipv6_dst); - + ds_put_char(ds, ')'); } else { - ds_put_format(ds, " proto%"PRIu8" tos%#"PRIx8" ttl%"PRIu8 - " ip"IP_FMT"->"IP_FMT, - flow->nw_proto, flow->nw_tos, flow->nw_ttl, - IP_ARGS(&flow->nw_src), IP_ARGS(&flow->nw_dst)); + ds_put_format(ds, " proto:%"PRIu8" tos:%#"PRIx8" ttl:%"PRIu8 + " ip("IP_FMT"->"IP_FMT")", + flow->nw_proto, flow->nw_tos, flow->nw_ttl, + IP_ARGS(&flow->nw_src), IP_ARGS(&flow->nw_dst)); } if (flow->nw_frag) { ds_put_format(ds, " frag(%s)", @@ -561,11 +569,11 @@ flow_format(struct ds *ds, const struct flow *flow) ? "later" : ""); } if (flow->tp_src || flow->tp_dst) { - ds_put_format(ds, " port%"PRIu16"->%"PRIu16, + ds_put_format(ds, " port(%"PRIu16"->%"PRIu16")", ntohs(flow->tp_src), ntohs(flow->tp_dst)); } if (!eth_addr_is_zero(flow->arp_sha) || !eth_addr_is_zero(flow->arp_tha)) { - ds_put_format(ds, " arp_ha"ETH_ADDR_FMT"->"ETH_ADDR_FMT, + ds_put_format(ds, " arp_ha("ETH_ADDR_FMT"->"ETH_ADDR_FMT")", ETH_ADDR_ARGS(flow->arp_sha), ETH_ADDR_ARGS(flow->arp_tha)); } @@ -585,7 +593,7 @@ flow_print(FILE *stream, const struct flow *flow) void flow_wildcards_init_catchall(struct flow_wildcards *wc) { - BUILD_ASSERT_DECL(FLOW_WC_SEQ == 7); + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); wc->wildcards = FWW_ALL; wc->tun_id_mask = htonll(0); @@ -593,9 +601,15 @@ flow_wildcards_init_catchall(struct flow_wildcards *wc) wc->nw_dst_mask = htonl(0); wc->ipv6_src_mask = in6addr_any; wc->ipv6_dst_mask = in6addr_any; + wc->nd_target_mask = in6addr_any; memset(wc->reg_masks, 0, sizeof wc->reg_masks); + wc->metadata_mask = htonll(0); wc->vlan_tci_mask = htons(0); wc->nw_frag_mask = 0; + wc->tp_src_mask = htons(0); + wc->tp_dst_mask = htons(0); + memset(wc->dl_src_mask, 0, ETH_ADDR_LEN); + memset(wc->dl_dst_mask, 0, ETH_ADDR_LEN); memset(wc->zeros, 0, sizeof wc->zeros); } @@ -604,7 +618,7 @@ flow_wildcards_init_catchall(struct flow_wildcards *wc) void flow_wildcards_init_exact(struct flow_wildcards *wc) { - BUILD_ASSERT_DECL(FLOW_WC_SEQ == 7); + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); wc->wildcards = 0; wc->tun_id_mask = htonll(UINT64_MAX); @@ -612,9 +626,15 @@ flow_wildcards_init_exact(struct flow_wildcards *wc) wc->nw_dst_mask = htonl(UINT32_MAX); wc->ipv6_src_mask = in6addr_exact; wc->ipv6_dst_mask = in6addr_exact; + wc->nd_target_mask = in6addr_exact; memset(wc->reg_masks, 0xff, sizeof wc->reg_masks); + wc->metadata_mask = htonll(UINT64_MAX); wc->vlan_tci_mask = htons(UINT16_MAX); wc->nw_frag_mask = UINT8_MAX; + wc->tp_src_mask = htons(UINT16_MAX); + wc->tp_dst_mask = htons(UINT16_MAX); + memset(wc->dl_src_mask, 0xff, ETH_ADDR_LEN); + memset(wc->dl_dst_mask, 0xff, ETH_ADDR_LEN); memset(wc->zeros, 0, sizeof wc->zeros); } @@ -625,15 +645,21 @@ flow_wildcards_is_exact(const struct flow_wildcards *wc) { int i; - BUILD_ASSERT_DECL(FLOW_WC_SEQ == 7); + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); if (wc->wildcards || wc->tun_id_mask != htonll(UINT64_MAX) || wc->nw_src_mask != htonl(UINT32_MAX) || wc->nw_dst_mask != htonl(UINT32_MAX) + || wc->tp_src_mask != htons(UINT16_MAX) + || wc->tp_dst_mask != htons(UINT16_MAX) || wc->vlan_tci_mask != htons(UINT16_MAX) + || wc->metadata_mask != htonll(UINT64_MAX) + || !eth_mask_is_exact(wc->dl_src_mask) + || !eth_mask_is_exact(wc->dl_dst_mask) || !ipv6_mask_is_exact(&wc->ipv6_src_mask) || !ipv6_mask_is_exact(&wc->ipv6_dst_mask) + || !ipv6_mask_is_exact(&wc->nd_target_mask) || wc->nw_frag_mask != UINT8_MAX) { return false; } @@ -654,15 +680,21 @@ flow_wildcards_is_catchall(const struct flow_wildcards *wc) { int i; - BUILD_ASSERT_DECL(FLOW_WC_SEQ == 7); + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); if (wc->wildcards != FWW_ALL || wc->tun_id_mask != htonll(0) || wc->nw_src_mask != htonl(0) || wc->nw_dst_mask != htonl(0) + || wc->tp_src_mask != htons(0) + || wc->tp_dst_mask != htons(0) || wc->vlan_tci_mask != htons(0) + || wc->metadata_mask != htonll(0) + || !eth_addr_is_zero(wc->dl_src_mask) + || !eth_addr_is_zero(wc->dl_dst_mask) || !ipv6_mask_is_any(&wc->ipv6_src_mask) || !ipv6_mask_is_any(&wc->ipv6_dst_mask) + || !ipv6_mask_is_any(&wc->nd_target_mask) || wc->nw_frag_mask != 0) { return false; } @@ -686,6 +718,8 @@ flow_wildcards_combine(struct flow_wildcards *dst, { int i; + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); + dst->wildcards = src1->wildcards | src2->wildcards; dst->tun_id_mask = src1->tun_id_mask & src2->tun_id_mask; dst->nw_src_mask = src1->nw_src_mask & src2->nw_src_mask; @@ -694,10 +728,17 @@ flow_wildcards_combine(struct flow_wildcards *dst, &src2->ipv6_src_mask); dst->ipv6_dst_mask = ipv6_addr_bitand(&src1->ipv6_dst_mask, &src2->ipv6_dst_mask); + dst->nd_target_mask = ipv6_addr_bitand(&src1->nd_target_mask, + &src2->nd_target_mask); for (i = 0; i < FLOW_N_REGS; i++) { dst->reg_masks[i] = src1->reg_masks[i] & src2->reg_masks[i]; } + dst->metadata_mask = src1->metadata_mask & src2->metadata_mask; dst->vlan_tci_mask = src1->vlan_tci_mask & src2->vlan_tci_mask; + dst->tp_src_mask = src1->tp_src_mask & src2->tp_src_mask; + dst->tp_dst_mask = src1->tp_dst_mask & src2->tp_dst_mask; + eth_addr_bitand(src1->dl_src_mask, src2->dl_src_mask, dst->dl_src_mask); + eth_addr_bitand(src1->dl_dst_mask, src2->dl_dst_mask, dst->dl_dst_mask); } /* Returns a hash of the wildcards in 'wc'. */ @@ -707,7 +748,7 @@ flow_wildcards_hash(const struct flow_wildcards *wc, uint32_t basis) /* If you change struct flow_wildcards and thereby trigger this * assertion, please check that the new struct flow_wildcards has no holes * in it before you update the assertion. */ - BUILD_ASSERT_DECL(sizeof *wc == 60 + FLOW_N_REGS * 4); + BUILD_ASSERT_DECL(sizeof *wc == 96 + FLOW_N_REGS * 4); return hash_bytes(wc, sizeof *wc, basis); } @@ -719,13 +760,21 @@ flow_wildcards_equal(const struct flow_wildcards *a, { int i; + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); + if (a->wildcards != b->wildcards || a->tun_id_mask != b->tun_id_mask || a->nw_src_mask != b->nw_src_mask || a->nw_dst_mask != b->nw_dst_mask || a->vlan_tci_mask != b->vlan_tci_mask + || a->metadata_mask != b->metadata_mask || !ipv6_addr_equals(&a->ipv6_src_mask, &b->ipv6_src_mask) - || !ipv6_addr_equals(&a->ipv6_dst_mask, &b->ipv6_dst_mask)) { + || !ipv6_addr_equals(&a->ipv6_dst_mask, &b->ipv6_dst_mask) + || !ipv6_addr_equals(&a->nd_target_mask, &b->nd_target_mask) + || a->tp_src_mask != b->tp_src_mask + || a->tp_dst_mask != b->tp_dst_mask + || !eth_addr_equals(a->dl_src_mask, b->dl_src_mask) + || !eth_addr_equals(a->dl_dst_mask, b->dl_dst_mask)) { return false; } @@ -745,14 +794,27 @@ flow_wildcards_has_extra(const struct flow_wildcards *a, const struct flow_wildcards *b) { int i; + uint8_t eth_masked[ETH_ADDR_LEN]; struct in6_addr ipv6_masked; + BUILD_ASSERT_DECL(FLOW_WC_SEQ == 12); + for (i = 0; i < FLOW_N_REGS; i++) { if ((a->reg_masks[i] & b->reg_masks[i]) != b->reg_masks[i]) { return true; } } + eth_addr_bitand(a->dl_src_mask, b->dl_src_mask, eth_masked); + if (!eth_addr_equals(eth_masked, b->dl_src_mask)) { + return true; + } + + eth_addr_bitand(a->dl_dst_mask, b->dl_dst_mask, eth_masked); + if (!eth_addr_equals(eth_masked, b->dl_dst_mask)) { + return true; + } + ipv6_masked = ipv6_addr_bitand(&a->ipv6_src_mask, &b->ipv6_src_mask); if (!ipv6_addr_equals(&ipv6_masked, &b->ipv6_src_mask)) { return true; @@ -763,11 +825,19 @@ flow_wildcards_has_extra(const struct flow_wildcards *a, return true; } + ipv6_masked = ipv6_addr_bitand(&a->nd_target_mask, &b->nd_target_mask); + if (!ipv6_addr_equals(&ipv6_masked, &b->nd_target_mask)) { + return true; + } + return (a->wildcards & ~b->wildcards || (a->tun_id_mask & b->tun_id_mask) != b->tun_id_mask || (a->nw_src_mask & b->nw_src_mask) != b->nw_src_mask || (a->nw_dst_mask & b->nw_dst_mask) != b->nw_dst_mask - || (a->vlan_tci_mask & b->vlan_tci_mask) != b->vlan_tci_mask); + || (a->vlan_tci_mask & b->vlan_tci_mask) != b->vlan_tci_mask + || (a->metadata_mask & b->metadata_mask) != b->metadata_mask + || (a->tp_src_mask & b->tp_src_mask) != b->tp_src_mask + || (a->tp_dst_mask & b->tp_dst_mask) != b->tp_dst_mask); } /* Sets the wildcard mask for register 'idx' in 'wc' to 'mask'. @@ -778,83 +848,6 @@ flow_wildcards_set_reg_mask(struct flow_wildcards *wc, int idx, uint32_t mask) wc->reg_masks[idx] = mask; } -/* Returns the wildcard bitmask for the Ethernet destination address - * that 'wc' specifies. The bitmask has a 0 in each bit that is wildcarded - * and a 1 in each bit that must match. */ -const uint8_t * -flow_wildcards_to_dl_dst_mask(flow_wildcards_t wc) -{ - static const uint8_t no_wild[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; - static const uint8_t addr_wild[] = {0x01, 0x00, 0x00, 0x00, 0x00, 0x00}; - static const uint8_t mcast_wild[] = {0xfe, 0xff, 0xff, 0xff, 0xff, 0xff}; - static const uint8_t all_wild[] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; - - switch (wc & (FWW_DL_DST | FWW_ETH_MCAST)) { - case 0: return no_wild; - case FWW_DL_DST: return addr_wild; - case FWW_ETH_MCAST: return mcast_wild; - case FWW_DL_DST | FWW_ETH_MCAST: return all_wild; - } - NOT_REACHED(); -} - -/* Returns true if 'mask' is a valid wildcard bitmask for the Ethernet - * destination address. Valid bitmasks are either all-bits-0 or all-bits-1, - * except that the multicast bit may differ from the rest of the bits. So, - * there are four possible valid bitmasks: - * - * - 00:00:00:00:00:00 - * - 01:00:00:00:00:00 - * - fe:ff:ff:ff:ff:ff - * - ff:ff:ff:ff:ff:ff - * - * All other bitmasks are invalid. */ -bool -flow_wildcards_is_dl_dst_mask_valid(const uint8_t mask[ETH_ADDR_LEN]) -{ - switch (mask[0]) { - case 0x00: - case 0x01: - return (mask[1] | mask[2] | mask[3] | mask[4] | mask[5]) == 0x00; - - case 0xfe: - case 0xff: - return (mask[1] & mask[2] & mask[3] & mask[4] & mask[5]) == 0xff; - - default: - return false; - } -} - -/* Returns 'wc' with the FWW_DL_DST and FWW_ETH_MCAST bits modified - * appropriately to match 'mask'. - * - * This function will assert-fail if 'mask' is invalid. Only 'mask' values - * accepted by flow_wildcards_is_dl_dst_mask_valid() are allowed. */ -flow_wildcards_t -flow_wildcards_set_dl_dst_mask(flow_wildcards_t wc, - const uint8_t mask[ETH_ADDR_LEN]) -{ - assert(flow_wildcards_is_dl_dst_mask_valid(mask)); - - switch (mask[0]) { - case 0x00: - return wc | FWW_DL_DST | FWW_ETH_MCAST; - - case 0x01: - return (wc | FWW_DL_DST) & ~FWW_ETH_MCAST; - - case 0xfe: - return (wc & ~FWW_DL_DST) | FWW_ETH_MCAST; - - case 0xff: - return wc & ~(FWW_DL_DST | FWW_ETH_MCAST); - - default: - NOT_REACHED(); - } -} - /* Hashes 'flow' based on its L2 through L4 protocol information. */ uint32_t flow_hash_symmetric_l4(const struct flow *flow, uint32_t basis) @@ -866,7 +859,7 @@ flow_hash_symmetric_l4(const struct flow *flow, uint32_t basis) }; ovs_be16 eth_type; ovs_be16 vlan_tci; - ovs_be16 tp_addr; + ovs_be16 tp_port; uint8_t eth_addr[ETH_ADDR_LEN]; uint8_t ip_proto; } fields; @@ -886,7 +879,7 @@ flow_hash_symmetric_l4(const struct flow *flow, uint32_t basis) fields.ipv4_addr = flow->nw_src ^ flow->nw_dst; fields.ip_proto = flow->nw_proto; if (fields.ip_proto == IPPROTO_TCP) { - fields.tp_addr = flow->tp_src ^ flow->tp_dst; + fields.tp_port = flow->tp_src ^ flow->tp_dst; } } else if (fields.eth_type == htons(ETH_TYPE_IPV6)) { const uint8_t *a = &flow->ipv6_src.s6_addr[0]; @@ -898,7 +891,7 @@ flow_hash_symmetric_l4(const struct flow *flow, uint32_t basis) } fields.ip_proto = flow->nw_proto; if (fields.ip_proto == IPPROTO_TCP) { - fields.tp_addr = flow->tp_src ^ flow->tp_dst; + fields.tp_port = flow->tp_src ^ flow->tp_dst; } } return hash_bytes(&fields, sizeof fields, basis); @@ -995,7 +988,7 @@ flow_compose(struct ofpbuf *b, const struct flow *flow) } if (flow->vlan_tci & htons(VLAN_CFI)) { - eth_push_vlan(b, flow->vlan_tci & ~htons(VLAN_CFI)); + eth_push_vlan(b, flow->vlan_tci); } if (flow->dl_type == htons(ETH_TYPE_IP)) {