diff options
| author | Kevin Bowling <kbowling@FreeBSD.org> | 2026-08-09 11:34:58 +0000 |
|---|---|---|
| committer | Kevin Bowling <kbowling@FreeBSD.org> | 2026-08-10 00:19:28 +0000 |
| commit | 49f9143d9a37a4646c9f4ddac53b97dde04e3fa3 (patch) | |
| tree | a6f21ef3974046fda3a411cba42597aff2b2999f | |
| parent | 0e56ccb5d86618994f884da21dfce692ad21e458 (diff) | |
ixgbe: Enable PF RSS across queues with SR-IOV
PSRTYPE is indexed by pool in VMDq+RSS mode, and its RQPL
field selects the number of receive queues available within the pool.
The PF occupies the last pool, but the driver programmed pool zero and
left the PF RQPL value at zero. As a result, all PF receive traffic
was directed to its first queue while SR-IOV was enabled.
Program PSRTYPE for the PF pool and encode its allocated receive queue
count.
MFC after: 2 weeks
| -rw-r--r-- | sys/dev/ixgbe/if_ix.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/sys/dev/ixgbe/if_ix.c b/sys/dev/ixgbe/if_ix.c index 2bdfc20df9bc..cd8acf6685a8 100644 --- a/sys/dev/ixgbe/if_ix.c +++ b/sys/dev/ixgbe/if_ix.c @@ -858,7 +858,21 @@ ixgbe_initialize_receive_units(if_ctx_t ctx) IXGBE_PSRTYPE_UDPHDR | IXGBE_PSRTYPE_IPV4HDR | IXGBE_PSRTYPE_IPV6HDR; - IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(0), psrtype); + + /* + * In VMDq+RSS mode PSRTYPE is per pool, and RQPL controls + * how many receive queues RSS may select within that pool. + * The PF occupies the last pool rather than pool zero. + */ +#ifdef PCI_IOV + if (sc->iov_mode != IXGBE_NO_VM) { + if (sc->num_rx_queues > 3) + psrtype |= 2u << IXGBE_PSRTYPE_RQPL_SHIFT; + else if (sc->num_rx_queues > 1) + psrtype |= 1u << IXGBE_PSRTYPE_RQPL_SHIFT; + } +#endif + IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(sc->pool), psrtype); } rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); |