diff options
Diffstat (limited to 'drivers/net/ethernet/sfc')
| -rw-r--r-- | drivers/net/ethernet/sfc/tc.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/tc.c b/drivers/net/ethernet/sfc/tc.c index dfe3a8bf74f0..047322b04d4f 100644 --- a/drivers/net/ethernet/sfc/tc.c +++ b/drivers/net/ethernet/sfc/tc.c @@ -1084,6 +1084,31 @@ static int efx_tc_pedit_add(struct efx_nic *efx, struct efx_tc_action_set *act, break; } break; + case FLOW_ACT_MANGLE_HDR_TYPE_IP6: + switch (fa->mangle.offset) { + case round_down(offsetof(struct ipv6hdr, hop_limit), 4): + /* check that pedit applies to hoplimit only */ + if (fa->mangle.mask != EFX_TC_HDR_TYPE_HLIMIT_MASK) + break; + + /* Adding 0xff is equivalent to decrementing the hoplimit. + * Other added values are not supported. + */ + if ((fa->mangle.val >> 24) != U8_MAX) + break; + + /* check that we do not decrement hoplimit twice */ + if (!efx_tc_flower_action_order_ok(act, + EFX_TC_AO_DEC_TTL)) { + NL_SET_ERR_MSG_MOD(extack, "Unsupported: multiple dec ttl"); + return -EOPNOTSUPP; + } + act->do_ttl_dec = 1; + return 0; + default: + break; + } + break; default: break; } |