diff options
| -rw-r--r-- | src/plugins/gtpu/gtpu_encap.c | 243 |
1 files changed, 194 insertions, 49 deletions
diff --git a/src/plugins/gtpu/gtpu_encap.c b/src/plugins/gtpu/gtpu_encap.c index adacf4c9..8ad53c53 100644 --- a/src/plugins/gtpu/gtpu_encap.c +++ b/src/plugins/gtpu/gtpu_encap.c @@ -36,8 +36,15 @@ typedef enum { GTPU_ENCAP_N_ERROR, } gtpu_encap_error_t; +#define foreach_gtpu_encap_next \ +_(DROP, "error-drop") \ +_(IP4_LOOKUP, "ip4-lookup") \ +_(IP6_LOOKUP, "ip6-lookup") + typedef enum { GTPU_ENCAP_NEXT_DROP, + GTPU_ENCAP_NEXT_IP4_LOOKUP, + GTPU_ENCAP_NEXT_IP6_LOOKUP, GTPU_ENCAP_N_NEXT, } gtpu_encap_next_t; @@ -76,13 +83,13 @@ gtpu_encap_inline (vlib_main_t * vm, vnet_main_t * vnm = gtm->vnet_main; vnet_interface_main_t * im = &vnm->interface_main; u32 pkts_encapsulated = 0; - u16 old_l0 = 0, old_l1 = 0; + u16 old_l0 = 0, old_l1 = 0, old_l2 = 0, old_l3 = 0; u32 thread_index = vlib_get_thread_index(); u32 stats_sw_if_index, stats_n_packets, stats_n_bytes; - u32 sw_if_index0 = 0, sw_if_index1 = 0; - u32 next0 = 0, next1 = 0; - vnet_hw_interface_t * hi0, * hi1; - gtpu_tunnel_t * t0 = NULL, * t1 = NULL; + u32 sw_if_index0 = 0, sw_if_index1 = 0, sw_if_index2 = 0, sw_if_index3 = 0; + u32 next0 = 0, next1 = 0, next2 = 0, next3 = 0; + vnet_hw_interface_t * hi0, * hi1, * hi2, * hi3; + gtpu_tunnel_t * t0 = NULL, * t1 = NULL, * t2 = NULL, * t3 = NULL; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; @@ -98,82 +105,117 @@ gtpu_encap_inline (vlib_main_t * vm, vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); - while (n_left_from >= 4 && n_left_to_next >= 2) + while (n_left_from >= 8 && n_left_to_next >= 4) { - u32 bi0, bi1; - vlib_buffer_t * b0, * b1; - u32 flow_hash0, flow_hash1; - u32 len0, len1; - ip4_header_t * ip4_0, * ip4_1; - ip6_header_t * ip6_0, * ip6_1; - udp_header_t * udp0, * udp1; - gtpu_header_t * gtpu0, * gtpu1; + u32 bi0, bi1, bi2, bi3; + vlib_buffer_t * b0, * b1, * b2, * b3; + u32 flow_hash0, flow_hash1, flow_hash2, flow_hash3; + u32 len0, len1, len2, len3; + ip4_header_t * ip4_0, * ip4_1, * ip4_2, * ip4_3; + ip6_header_t * ip6_0, * ip6_1, * ip6_2, * ip6_3; + udp_header_t * udp0, * udp1, * udp2, * udp3; + gtpu_header_t * gtpu0, * gtpu1, * gtpu2, * gtpu3; u64 * copy_src0, * copy_dst0; u64 * copy_src1, * copy_dst1; + u64 * copy_src2, * copy_dst2; + u64 * copy_src3, * copy_dst3; u32 * copy_src_last0, * copy_dst_last0; u32 * copy_src_last1, * copy_dst_last1; - u16 new_l0, new_l1; - ip_csum_t sum0, sum1; + u32 * copy_src_last2, * copy_dst_last2; + u32 * copy_src_last3, * copy_dst_last3; + u16 new_l0, new_l1, new_l2, new_l3; + ip_csum_t sum0, sum1, sum2, sum3; /* Prefetch next iteration. */ { - vlib_buffer_t * p2, * p3; - - p2 = vlib_get_buffer (vm, from[2]); - p3 = vlib_get_buffer (vm, from[3]); - - vlib_prefetch_buffer_header (p2, LOAD); - vlib_prefetch_buffer_header (p3, LOAD); - - CLIB_PREFETCH (p2->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); - CLIB_PREFETCH (p3->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); + vlib_buffer_t * p4, * p5, * p6, * p7; + + p4 = vlib_get_buffer (vm, from[4]); + p5 = vlib_get_buffer (vm, from[5]); + p6 = vlib_get_buffer (vm, from[6]); + p7 = vlib_get_buffer (vm, from[7]); + + vlib_prefetch_buffer_header (p4, LOAD); + vlib_prefetch_buffer_header (p5, LOAD); + vlib_prefetch_buffer_header (p6, LOAD); + vlib_prefetch_buffer_header (p7, LOAD); + + CLIB_PREFETCH (p4->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p5->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p6->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (p7->data, 2*CLIB_CACHE_LINE_BYTES, LOAD); } bi0 = from[0]; bi1 = from[1]; + bi2 = from[2]; + bi3 = from[3]; to_next[0] = bi0; to_next[1] = bi1; - from += 2; - to_next += 2; - n_left_to_next -= 2; - n_left_from -= 2; + to_next[2] = bi2; + to_next[3] = bi3; + from += 4; + to_next += 4; + n_left_to_next -= 4; + n_left_from -= 4; b0 = vlib_get_buffer (vm, bi0); b1 = vlib_get_buffer (vm, bi1); + b2 = vlib_get_buffer (vm, bi2); + b3 = vlib_get_buffer (vm, bi3); flow_hash0 = vnet_l2_compute_flow_hash (b0); flow_hash1 = vnet_l2_compute_flow_hash (b1); + flow_hash2 = vnet_l2_compute_flow_hash (b2); + flow_hash3 = vnet_l2_compute_flow_hash (b3); /* Get next node index and adj index from tunnel next_dpo */ sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_TX]; + sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_TX]; + sw_if_index2 = vnet_buffer(b2)->sw_if_index[VLIB_TX]; + sw_if_index3 = vnet_buffer(b3)->sw_if_index[VLIB_TX]; hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0); + hi1 = vnet_get_sup_hw_interface (vnm, sw_if_index1); + hi2 = vnet_get_sup_hw_interface (vnm, sw_if_index2); + hi3 = vnet_get_sup_hw_interface (vnm, sw_if_index3); t0 = >m->tunnels[hi0->dev_instance]; + t1 = >m->tunnels[hi1->dev_instance]; + t2 = >m->tunnels[hi2->dev_instance]; + t3 = >m->tunnels[hi3->dev_instance]; + /* Note: change to always set next0 if it may be set to drop */ next0 = t0->next_dpo.dpoi_next_node; vnet_buffer(b0)->ip.adj_index[VLIB_TX] = t0->next_dpo.dpoi_index; - - /* Get next node index and adj index from tunnel next_dpo */ - sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_TX]; - hi1 = vnet_get_sup_hw_interface (vnm, sw_if_index1); - t1 = >m->tunnels[hi1->dev_instance]; - /* Note: change to always set next1 if it may be set to drop */ next1 = t1->next_dpo.dpoi_next_node; vnet_buffer(b1)->ip.adj_index[VLIB_TX] = t1->next_dpo.dpoi_index; + next2 = t2->next_dpo.dpoi_next_node; + vnet_buffer(b2)->ip.adj_index[VLIB_TX] = t2->next_dpo.dpoi_index; + next3 = t3->next_dpo.dpoi_next_node; + vnet_buffer(b3)->ip.adj_index[VLIB_TX] = t3->next_dpo.dpoi_index; /* Apply the rewrite string. $$$$ vnet_rewrite? */ vlib_buffer_advance (b0, -(word)_vec_len(t0->rewrite)); vlib_buffer_advance (b1, -(word)_vec_len(t1->rewrite)); + vlib_buffer_advance (b2, -(word)_vec_len(t2->rewrite)); + vlib_buffer_advance (b3, -(word)_vec_len(t3->rewrite)); if (is_ip4) { ip4_0 = vlib_buffer_get_current(b0); ip4_1 = vlib_buffer_get_current(b1); + ip4_2 = vlib_buffer_get_current(b2); + ip4_3 = vlib_buffer_get_current(b3); /* Copy the fixed header */ copy_dst0 = (u64 *) ip4_0; copy_src0 = (u64 *) t0->rewrite; copy_dst1 = (u64 *) ip4_1; copy_src1 = (u64 *) t1->rewrite; + copy_dst2 = (u64 *) ip4_2; + copy_src2 = (u64 *) t2->rewrite; + copy_dst3 = (u64 *) ip4_3; + copy_src3 = (u64 *) t3->rewrite; + /* Copy first 32 octets 8-bytes at a time */ #define _(offs) copy_dst0[offs] = copy_src0[offs]; foreach_fixed_header4_offset; @@ -181,6 +223,12 @@ gtpu_encap_inline (vlib_main_t * vm, #define _(offs) copy_dst1[offs] = copy_src1[offs]; foreach_fixed_header4_offset; #undef _ +#define _(offs) copy_dst2[offs] = copy_src2[offs]; + foreach_fixed_header4_offset; +#undef _ +#define _(offs) copy_dst3[offs] = copy_src3[offs]; + foreach_fixed_header4_offset; +#undef _ /* Last 4 octets. Hopefully gcc will be our friend */ copy_dst_last0 = (u32 *)(©_dst0[4]); copy_src_last0 = (u32 *)(©_src0[4]); @@ -188,6 +236,12 @@ gtpu_encap_inline (vlib_main_t * vm, copy_dst_last1 = (u32 *)(©_dst1[4]); copy_src_last1 = (u32 *)(©_src1[4]); copy_dst_last1[0] = copy_src_last1[0]; + copy_dst_last2 = (u32 *)(©_dst2[4]); + copy_src_last2 = (u32 *)(©_src2[4]); + copy_dst_last2[0] = copy_src_last2[0]; + copy_dst_last3 = (u32 *)(©_dst3[4]); + copy_src_last3 = (u32 *)(©_src3[4]); + copy_dst_last3[0] = copy_src_last3[0]; /* Fix the IP4 checksum and length */ sum0 = ip4_0->checksum; @@ -204,6 +258,20 @@ gtpu_encap_inline (vlib_main_t * vm, length /* changed member */); ip4_1->checksum = ip_csum_fold (sum1); ip4_1->length = new_l1; + sum2 = ip4_2->checksum; + new_l2 = /* old_l0 always 0, see the rewrite setup */ + clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b2)); + sum2 = ip_csum_update (sum2, old_l2, new_l2, ip4_header_t, + length /* changed member */); + ip4_2->checksum = ip_csum_fold (sum2); + ip4_2->length = new_l2; + sum3 = ip4_3->checksum; + new_l3 = /* old_l1 always 0, see the rewrite setup */ + clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b3)); + sum3 = ip_csum_update (sum3, old_l3, new_l3, ip4_header_t, + length /* changed member */); + ip4_3->checksum = ip_csum_fold (sum3); + ip4_3->length = new_l3; /* Fix UDP length and set source port */ udp0 = (udp_header_t *)(ip4_0+1); @@ -216,6 +284,16 @@ gtpu_encap_inline (vlib_main_t * vm, - sizeof (*ip4_1)); udp1->length = new_l1; udp1->src_port = flow_hash1; + udp2 = (udp_header_t *)(ip4_2+1); + new_l2 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b2) + - sizeof (*ip4_2)); + udp2->length = new_l2; + udp2->src_port = flow_hash2; + udp3 = (udp_header_t *)(ip4_3+1); + new_l3 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b3) + - sizeof (*ip4_3)); + udp3->length = new_l3; + udp3->src_port = flow_hash3; /* Fix GTPU length */ gtpu0 = (gtpu_header_t *)(udp0+1); @@ -226,6 +304,14 @@ gtpu_encap_inline (vlib_main_t * vm, new_l1 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b1) - sizeof (*ip4_1) - sizeof(*udp1)); gtpu1->length = new_l1; + gtpu2 = (gtpu_header_t *)(udp2+1); + new_l2 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b2) + - sizeof (*ip4_2) - sizeof(*udp2)); + gtpu2->length = new_l2; + gtpu3 = (gtpu_header_t *)(udp1+3); + new_l3 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b3) + - sizeof (*ip4_3) - sizeof(*udp3)); + gtpu3->length = new_l3; } else /* ipv6 */ { @@ -233,12 +319,18 @@ gtpu_encap_inline (vlib_main_t * vm, ip6_0 = vlib_buffer_get_current(b0); ip6_1 = vlib_buffer_get_current(b1); + ip6_2 = vlib_buffer_get_current(b2); + ip6_3 = vlib_buffer_get_current(b3); /* Copy the fixed header */ copy_dst0 = (u64 *) ip6_0; copy_src0 = (u64 *) t0->rewrite; copy_dst1 = (u64 *) ip6_1; copy_src1 = (u64 *) t1->rewrite; + copy_dst2 = (u64 *) ip6_2; + copy_src2 = (u64 *) t2->rewrite; + copy_dst3 = (u64 *) ip6_3; + copy_src3 = (u64 *) t3->rewrite; /* Copy first 56 (ip6) octets 8-bytes at a time */ #define _(offs) copy_dst0[offs] = copy_src0[offs]; foreach_fixed_header6_offset; @@ -246,6 +338,12 @@ gtpu_encap_inline (vlib_main_t * vm, #define _(offs) copy_dst1[offs] = copy_src1[offs]; foreach_fixed_header6_offset; #undef _ +#define _(offs) copy_dst2[offs] = copy_src2[offs]; + foreach_fixed_header6_offset; +#undef _ +#define _(offs) copy_dst3[offs] = copy_src3[offs]; + foreach_fixed_header6_offset; +#undef _ /* Fix IP6 payload length */ new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) @@ -255,6 +353,14 @@ gtpu_encap_inline (vlib_main_t * vm, clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b1) - sizeof(*ip6_1)); ip6_1->payload_length = new_l1; + new_l2 = + clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b2) + - sizeof(*ip6_2)); + ip6_2->payload_length = new_l2; + new_l3 = + clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b3) + - sizeof(*ip6_3)); + ip6_3->payload_length = new_l3; /* Fix UDP length and set source port */ udp0 = (udp_header_t *)(ip6_0+1); @@ -263,6 +369,12 @@ gtpu_encap_inline (vlib_main_t * vm, udp1 = (udp_header_t *)(ip6_1+1); udp1->length = new_l1; udp1->src_port = flow_hash1; + udp2 = (udp_header_t *)(ip6_2+1); + udp2->length = new_l2; + udp2->src_port = flow_hash2; + udp3 = (udp_header_t *)(ip6_3+1); + udp3->length = new_l3; + udp3->src_port = flow_hash3; /* IPv6 UDP checksum is mandatory */ udp0->checksum = ip6_tcp_udp_icmp_compute_checksum(vm, b0, @@ -273,6 +385,14 @@ gtpu_encap_inline (vlib_main_t * vm, ip6_1, &bogus); if (udp1->checksum == 0) udp1->checksum = 0xffff; + udp2->checksum = ip6_tcp_udp_icmp_compute_checksum(vm, b2, + ip6_2, &bogus); + if (udp2->checksum == 0) + udp2->checksum = 0xffff; + udp3->checksum = ip6_tcp_udp_icmp_compute_checksum(vm, b3, + ip6_3, &bogus); + if (udp3->checksum == 0) + udp3->checksum = 0xffff; /* Fix GTPU length */ gtpu0 = (gtpu_header_t *)(udp0+1); @@ -283,24 +403,38 @@ gtpu_encap_inline (vlib_main_t * vm, new_l1 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b1) - sizeof (*ip4_1) - sizeof(*udp1)); gtpu1->length = new_l1; + gtpu2 = (gtpu_header_t *)(udp2+1); + new_l2 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b2) + - sizeof (*ip4_2) - sizeof(*udp2)); + gtpu2->length = new_l2; + gtpu3 = (gtpu_header_t *)(udp3+1); + new_l3 = clib_host_to_net_u16 (vlib_buffer_length_in_chain(vm, b3) + - sizeof (*ip4_3) - sizeof(*udp3)); + gtpu3->length = new_l3; } - pkts_encapsulated += 2; + pkts_encapsulated += 4; len0 = vlib_buffer_length_in_chain (vm, b0); len1 = vlib_buffer_length_in_chain (vm, b1); - stats_n_packets += 2; - stats_n_bytes += len0 + len1; + len2 = vlib_buffer_length_in_chain (vm, b2); + len3 = vlib_buffer_length_in_chain (vm, b3); + stats_n_packets += 4; + stats_n_bytes += len0 + len1 + len2 + len3; /* Batch stats increment on the same gtpu tunnel so counter is not incremented per packet. Note stats are still incremented for deleted and admin-down tunnel where packets are dropped. It is not worthwhile to check for this rare case and affect normal path performance. */ if (PREDICT_FALSE ((sw_if_index0 != stats_sw_if_index) || - (sw_if_index1 != stats_sw_if_index))) + (sw_if_index1 != stats_sw_if_index) || + (sw_if_index2 != stats_sw_if_index) || + (sw_if_index3 != stats_sw_if_index) )) { - stats_n_packets -= 2; - stats_n_bytes -= len0 + len1; - if (sw_if_index0 == sw_if_index1) + stats_n_packets -= 4; + stats_n_bytes -= len0 + len1 + len2 + len3; + if ( (sw_if_index0 == sw_if_index1 ) && + (sw_if_index1 == sw_if_index2 ) && + (sw_if_index2 == sw_if_index3 ) ) { if (stats_n_packets) vlib_increment_combined_counter @@ -308,8 +442,8 @@ gtpu_encap_inline (vlib_main_t * vm, thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes); stats_sw_if_index = sw_if_index0; - stats_n_packets = 2; - stats_n_bytes = len0 + len1; + stats_n_packets = 4; + stats_n_bytes = len0 + len1 + len2 + len3; } else { @@ -319,6 +453,12 @@ gtpu_encap_inline (vlib_main_t * vm, vlib_increment_combined_counter (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, thread_index, sw_if_index1, 1, len1); + vlib_increment_combined_counter + (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, + thread_index, sw_if_index2, 1, len2); + vlib_increment_combined_counter + (im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, + thread_index, sw_if_index3, 1, len3); } } @@ -338,9 +478,10 @@ gtpu_encap_inline (vlib_main_t * vm, tr->teid = t1->teid; } - vlib_validate_buffer_enqueue_x2 (vm, node, next_index, + vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next, n_left_to_next, - bi0, bi1, next0, next1); + bi0, bi1, bi2, bi3, + next0, next1, next2, next3); } while (n_left_from > 0 && n_left_to_next > 0) @@ -536,7 +677,9 @@ VLIB_REGISTER_NODE (gtpu4_encap_node) = { .error_strings = gtpu_encap_error_strings, .n_next_nodes = GTPU_ENCAP_N_NEXT, .next_nodes = { - [GTPU_ENCAP_NEXT_DROP] = "error-drop", +#define _(s,n) [GTPU_ENCAP_NEXT_##s] = n, + foreach_gtpu_encap_next +#undef _ }, }; @@ -552,7 +695,9 @@ VLIB_REGISTER_NODE (gtpu6_encap_node) = { .error_strings = gtpu_encap_error_strings, .n_next_nodes = GTPU_ENCAP_N_NEXT, .next_nodes = { - [GTPU_ENCAP_NEXT_DROP] = "error-drop", +#define _(s,n) [GTPU_ENCAP_NEXT_##s] = n, + foreach_gtpu_encap_next +#undef _ }, }; |