libcxgb: Don't accidentally set RTO_ONLINK in cxgb_find_route()

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Mask the ECN bits before calling ip_route_output_ports(). The tos
variable might be passed directly from an IPv4 header, so it may have
the last ECN bit set. This interferes with the route lookup process as
ip_route_output_key_hash() interpretes this bit specially (to restrict
the route scope).

Found by code inspection, compile tested only.

Fixes: 804c2f3e36 ("libcxgb,iw_cxgb4,cxgbit: add cxgb_find_route()")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Guillaume Nault 2022-01-10 14:43:11 +01:00 • committed by Jakub Kicinski

parent f7716b3185

commit a915deaa9a

1 changed files with 2 additions and 1 deletions

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drivers/net/ethernet/chelsio/libcxgb/libcxgb_cm.c

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