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VPP-45 Fix crash when GRE packet received on new i/f

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If a GRE tunnel is created, no other interface added and the GRE tunnel
is not set "up" then a crash occurs on the first packet for this tunnel
because fib_index_by_sw_if_index[] does not yet have a mapping to the fib
the new interface is in. The code to set this is missing from
gre/interface.c

Change-Id: I567ad74a2af3ea5afe4a40ed39a1d4395642f77c
Signed-off-by: Chris Luke <chrisy@flirble.org>
This commit is contained in:
Chris Luke
2016-05-06 11:51:54 -04:00
committed by Dave Barach
parent 30aff24e10
commit 716490069e
1 changed files with 3 additions and 0 deletions
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3
vnet/vnet/gre/interface.c
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@ -102,6 +102,9 @@ int vnet_gre_add_del_tunnel
vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
gm->tunnel_index_by_sw_if_index[sw_if_index] = t - gm->tunnels;
vec_validate (im->fib_index_by_sw_if_index, sw_if_index);
im->fib_index_by_sw_if_index[sw_if_index] = t->outer_fib_index;
hi->min_packet_bytes = 64 + sizeof (gre_header_t) + sizeof (ip4_header_t);
hi->per_packet_overhead_bytes =
/* preamble */ 8 + /* inter frame gap */ 12;