diff options
Diffstat (limited to 'src/vnet/ip/ip6_reassembly.c')
| -rw-r--r-- | src/vnet/ip/ip6_reassembly.c | 66 |
1 files changed, 34 insertions, 32 deletions
diff --git a/src/vnet/ip/ip6_reassembly.c b/src/vnet/ip/ip6_reassembly.c index 01f76aa1f0e..10fc6f1f559 100644 --- a/src/vnet/ip/ip6_reassembly.c +++ b/src/vnet/ip/ip6_reassembly.c @@ -110,12 +110,10 @@ typedef struct u32 data_len; // trace operation counter u32 trace_op_counter; - // next index - used by non-feature node + // next index - used by custom apps (~0 if not set) u32 next_index; - // error next index - used by non-feature node + // error next index - used by custom apps (~0 if not set) u32 error_next_index; - // is_feature flag stored for non-inline code use - bool is_feature; // minimum fragment length for this reassembly - used to estimate MTU u16 min_fragment_length; // number of fragments for this reassembly @@ -326,8 +324,7 @@ ip6_reass_free (ip6_reass_main_t * rm, ip6_reass_per_thread_t * rt, always_inline void ip6_reass_drop_all (vlib_main_t * vm, vlib_node_runtime_t * node, - ip6_reass_main_t * rm, ip6_reass_t * reass, - bool is_feature) + ip6_reass_main_t * rm, ip6_reass_t * reass) { u32 range_bi = reass->first_bi; vlib_buffer_t *range_b; @@ -355,7 +352,7 @@ ip6_reass_drop_all (vlib_main_t * vm, vlib_node_runtime_t * node, range_bi = range_vnb->ip.reass.next_range_bi; } /* send to next_error_index */ - if (!(is_feature)) + if (~0 != reass->error_next_index) { u32 n_left_to_next, *to_next, next_index; @@ -393,13 +390,13 @@ ip6_reass_drop_all (vlib_main_t * vm, vlib_node_runtime_t * node, always_inline void ip6_reass_on_timeout (vlib_main_t * vm, vlib_node_runtime_t * node, ip6_reass_main_t * rm, ip6_reass_t * reass, - u32 * icmp_bi, bool is_feature) + u32 * icmp_bi) { if (~0 == reass->first_bi) { return; } - if (is_feature) + if (~0 == reass->next_index) // custom apps don't want icmp { vlib_buffer_t *b = vlib_get_buffer (vm, reass->first_bi); if (0 == vnet_buffer (b)->ip.reass.fragment_first) @@ -426,14 +423,13 @@ ip6_reass_on_timeout (vlib_main_t * vm, vlib_node_runtime_t * node, 0); } } - ip6_reass_drop_all (vm, node, rm, reass, is_feature); + ip6_reass_drop_all (vm, node, rm, reass); } always_inline ip6_reass_t * ip6_reass_find_or_create (vlib_main_t * vm, vlib_node_runtime_t * node, ip6_reass_main_t * rm, ip6_reass_per_thread_t * rt, - ip6_reass_kv_t * kv, u32 * icmp_bi, u8 * do_handoff, - bool is_feature) + ip6_reass_kv_t * kv, u32 * icmp_bi, u8 * do_handoff) { ip6_reass_t *reass = NULL; f64 now = vlib_time_now (rm->vlib_main); @@ -450,7 +446,7 @@ ip6_reass_find_or_create (vlib_main_t * vm, vlib_node_runtime_t * node, if (now > reass->last_heard + rm->timeout) { - ip6_reass_on_timeout (vm, node, rm, reass, icmp_bi, is_feature); + ip6_reass_on_timeout (vm, node, rm, reass, icmp_bi); ip6_reass_free (rm, rt, reass); reass = NULL; } @@ -476,7 +472,8 @@ ip6_reass_find_or_create (vlib_main_t * vm, vlib_node_runtime_t * node, reass->first_bi = ~0; reass->last_packet_octet = ~0; reass->data_len = 0; - reass->is_feature = is_feature; + reass->next_index = ~0; + reass->error_next_index = ~0; ++rt->reass_n; } @@ -503,7 +500,7 @@ always_inline ip6_reass_rc_t ip6_reass_finalize (vlib_main_t * vm, vlib_node_runtime_t * node, ip6_reass_main_t * rm, ip6_reass_per_thread_t * rt, ip6_reass_t * reass, u32 * bi0, u32 * next0, u32 * error0, - bool is_feature) + bool is_custom_app) { *bi0 = reass->first_bi; *error0 = IP6_ERROR_NONE; @@ -706,7 +703,7 @@ ip6_reass_finalize (vlib_main_t * vm, vlib_node_runtime_t * node, while (0); #endif } - if (is_feature) + if (!is_custom_app) { *next0 = IP6_REASSEMBLY_NEXT_INPUT; } @@ -754,13 +751,16 @@ always_inline ip6_reass_rc_t ip6_reass_update (vlib_main_t * vm, vlib_node_runtime_t * node, ip6_reass_main_t * rm, ip6_reass_per_thread_t * rt, ip6_reass_t * reass, u32 * bi0, u32 * next0, u32 * error0, - ip6_frag_hdr_t * frag_hdr, bool is_feature) + ip6_frag_hdr_t * frag_hdr, bool is_custom_app) { int consumed = 0; vlib_buffer_t *fb = vlib_get_buffer (vm, *bi0); vnet_buffer_opaque_t *fvnb = vnet_buffer (fb); - reass->next_index = fvnb->ip.reass.next_index; // store next_index before it's overwritten - reass->error_next_index = fvnb->ip.reass.error_next_index; // store error_next_index before it is overwritten + if (is_custom_app) + { + reass->next_index = fvnb->ip.reass.next_index; // store next_index before it's overwritten + reass->error_next_index = fvnb->ip.reass.error_next_index; // store error_next_index before it is overwritten + } fvnb->ip.reass.ip6_frag_hdr_offset = (u8 *) frag_hdr - (u8 *) vlib_buffer_get_current (fb); @@ -837,7 +837,7 @@ ip6_reass_update (vlib_main_t * vm, vlib_node_runtime_t * node, else { // overlapping fragment - not allowed by RFC 8200 - ip6_reass_drop_all (vm, node, rm, reass, is_feature); + ip6_reass_drop_all (vm, node, rm, reass); ip6_reass_free (rm, rt, reass); if (PREDICT_FALSE (fb->flags & VLIB_BUFFER_IS_TRACED)) { @@ -863,7 +863,7 @@ check_if_done_maybe: reass->data_len == reass->last_packet_octet + 1) { return ip6_reass_finalize (vm, node, rm, rt, reass, bi0, next0, error0, - is_feature); + is_custom_app); } else { @@ -952,9 +952,9 @@ ip6_reass_verify_packet_size_lt_64k (vlib_main_t * vm, } always_inline uword -ip6_reassembly_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, bool is_feature) +ip6_reassembly_inline (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame, bool is_feature, + bool is_custom_app) { u32 *from = vlib_frame_vector_args (frame); u32 n_left_from, n_left_to_next, *to_next, next_index; @@ -1027,7 +1027,7 @@ ip6_reassembly_inline (vlib_main_t * vm, ip6_reass_t *reass = ip6_reass_find_or_create (vm, node, rm, rt, &kv, &icmp_bi, - &do_handoff, is_feature); + &do_handoff); if (PREDICT_FALSE (do_handoff)) { @@ -1042,7 +1042,7 @@ ip6_reassembly_inline (vlib_main_t * vm, else if (reass) { switch (ip6_reass_update (vm, node, rm, rt, reass, &bi0, &next0, - &error0, frag_hdr, is_feature)) + &error0, frag_hdr, is_custom_app)) { case IP6_REASS_RC_OK: /* nothing to do here */ @@ -1051,14 +1051,14 @@ ip6_reassembly_inline (vlib_main_t * vm, vlib_node_increment_counter (vm, node->node_index, IP6_ERROR_REASS_FRAGMENT_CHAIN_TOO_LONG, 1); - ip6_reass_drop_all (vm, node, rm, reass, is_feature); + ip6_reass_drop_all (vm, node, rm, reass); ip6_reass_free (rm, rt, reass); goto next_packet; break; case IP6_REASS_RC_NO_BUF: vlib_node_increment_counter (vm, node->node_index, IP6_ERROR_REASS_NO_BUF, 1); - ip6_reass_drop_all (vm, node, rm, reass, is_feature); + ip6_reass_drop_all (vm, node, rm, reass); ip6_reass_free (rm, rt, reass); goto next_packet; break; @@ -1067,7 +1067,7 @@ ip6_reassembly_inline (vlib_main_t * vm, vlib_node_increment_counter (vm, node->node_index, IP6_ERROR_REASS_INTERNAL_ERROR, 1); - ip6_reass_drop_all (vm, node, rm, reass, is_feature); + ip6_reass_drop_all (vm, node, rm, reass); ip6_reass_free (rm, rt, reass); goto next_packet; break; @@ -1135,7 +1135,8 @@ static char *ip6_reassembly_error_strings[] = { VLIB_NODE_FN (ip6_reass_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { - return ip6_reassembly_inline (vm, node, frame, false /* is_feature */ ); + return ip6_reassembly_inline (vm, node, frame, false /* is_feature */ , + false /* is_custom_app */ ); } /* *INDENT-OFF* */ @@ -1160,7 +1161,8 @@ VLIB_NODE_FN (ip6_reass_node_feature) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame) { - return ip6_reassembly_inline (vm, node, frame, true /* is_feature */ ); + return ip6_reassembly_inline (vm, node, frame, true /* is_feature */ , + false /* is_custom_app */ ); } /* *INDENT-OFF* */ @@ -1407,7 +1409,7 @@ ip6_reass_walk_expired (vlib_main_t * vm, b->flags &= ~VLIB_BUFFER_IS_TRACED; } } - ip6_reass_on_timeout (vm, node, rm, reass, &icmp_bi, reass->is_feature); + ip6_reass_on_timeout (vm, node, rm, reass, &icmp_bi); if (~0 != icmp_bi) { vec_add1 (vec_icmp_bi, icmp_bi); |