diff options
| author |   Dave Barach <dave@barachs.net> | 2020-04-07 10:52:43 -0400 |
|---|---|---|
| committer |   Dave Wallace <dwallacelf@gmail.com> | 2020-04-13 15:02:30 +0000 |
| commit | 7f094c2212cf906227ecb06e00f3082d886b32a0 (patch) | |
| tree | 86d102165da82983f1a6db9d0e16152f72fd6091 /src/vnet/l2/l2_flood.c | |
| parent | e2568b5d0a5e34f02adda788e51ed0147644bec9 (diff) | |
l2: handle complete clone fail in l2_flood
vlib_buffer_clone(...) may not manage to produce any buffer clones at
all.
vlib_buffer_clone_256 should not smash the original buffer reference
count if no clones are produced.
Type: fix
Signed-off-by: Dave Barach <dave@barachs.net>
Change-Id: I14d9d53637a220485c7a0036cfc75a4149b264ea
(cherry picked from commit 95e19253320ab07748787f4c8a7620704563f6b8)
Diffstat (limited to 'src/vnet/l2/l2_flood.c')
| -rw-r--r-- | src/vnet/l2/l2_flood.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/vnet/l2/l2_flood.c b/src/vnet/l2/l2_flood.c index 10e087767e4..b5eb5fe6381 100644 --- a/src/vnet/l2/l2_flood.c +++ b/src/vnet/l2/l2_flood.c @@ -230,6 +230,13 @@ VLIB_NODE_FN (l2flood_node) (vlib_main_t * vm, if (PREDICT_FALSE (n_cloned != n_clones)) { b0->error = node->errors[L2FLOOD_ERROR_REPL_FAIL]; + /* Worst-case, no clones, consume the original buf */ + if (n_cloned == 0) + { + ci0 = bi0; + member = msm->members[thread_index][0]; + goto use_original_buffer; + } } /* @@ -284,6 +291,7 @@ VLIB_NODE_FN (l2flood_node) (vlib_main_t * vm, member = msm->members[thread_index][0]; } + use_original_buffer: /* * the last clone that might go to a BVI */ @@ -306,8 +314,6 @@ VLIB_NODE_FN (l2flood_node) (vlib_main_t * vm, clib_memcpy_fast (t->src, h0->src_address, 6); clib_memcpy_fast (t->dst, h0->dst_address, 6); } - - /* Forward packet to the current member */ if (PREDICT_FALSE (member->flags & L2_FLOOD_MEMBER_BVI)) { |