The branch stable/15 has been updated by olivier: URL: https://cgit.FreeBSD.org/src/commit/?id=410403d2e9ea5152206d18271e54c717b8b1fcb1
commit 410403d2e9ea5152206d18271e54c717b8b1fcb1 Author: Olivier Cochard <[email protected]> AuthorDate: 2026-07-28 19:13:53 +0000 Commit: Olivier Cochard <[email protected]> CommitDate: 2026-08-04 09:33:05 +0000 e1000: report UDP RSS hash type on igb/em {em,igb}_determine_rsstype() mapped only the TCP and bare-IP RSS descriptor types; the UDP types returned M_HASHTYPE_NONE. The hardware does hash UDP, but with a NONE hashtype iflib skips its flowid-based TX queue spread, so all forwarded UDP egressed on a single queue and serialized transmit on one core. Add the three UDP cases (IPV4_UDP, IPV6_UDP, IPV6_UDP_EX) so egress spreads across all TX queues. Reviewed by: kbowling, gallatin Approved by: kbowling MFC after: 1 week Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D58513 (cherry picked from commit 285c749f575ed7f9e60555037f23ac673084c62a) --- sys/dev/e1000/em_txrx.c | 6 ++++++ sys/dev/e1000/igb_txrx.c | 6 ++++++ 2 files changed, 12 insertions(+) diff --git a/sys/dev/e1000/em_txrx.c b/sys/dev/e1000/em_txrx.c index 126364b00734..754f1a139065 100644 --- a/sys/dev/e1000/em_txrx.c +++ b/sys/dev/e1000/em_txrx.c @@ -858,6 +858,12 @@ em_determine_rsstype(uint32_t pkt_info) return M_HASHTYPE_RSS_IPV6; case E1000_RXDADV_RSSTYPE_IPV6_TCP_EX: return M_HASHTYPE_RSS_TCP_IPV6_EX; + case E1000_RXDADV_RSSTYPE_IPV4_UDP: + return M_HASHTYPE_RSS_UDP_IPV4; + case E1000_RXDADV_RSSTYPE_IPV6_UDP: + return M_HASHTYPE_RSS_UDP_IPV6; + case E1000_RXDADV_RSSTYPE_IPV6_UDP_EX: + return M_HASHTYPE_RSS_UDP_IPV6_EX; default: return M_HASHTYPE_OPAQUE; } diff --git a/sys/dev/e1000/igb_txrx.c b/sys/dev/e1000/igb_txrx.c index c34bf3874e02..6f13348bdb3e 100644 --- a/sys/dev/e1000/igb_txrx.c +++ b/sys/dev/e1000/igb_txrx.c @@ -593,6 +593,12 @@ igb_determine_rsstype(uint16_t pkt_info) return M_HASHTYPE_RSS_IPV6; case E1000_RXDADV_RSSTYPE_IPV6_TCP_EX: return M_HASHTYPE_RSS_TCP_IPV6_EX; + case E1000_RXDADV_RSSTYPE_IPV4_UDP: + return M_HASHTYPE_RSS_UDP_IPV4; + case E1000_RXDADV_RSSTYPE_IPV6_UDP: + return M_HASHTYPE_RSS_UDP_IPV6; + case E1000_RXDADV_RSSTYPE_IPV6_UDP_EX: + return M_HASHTYPE_RSS_UDP_IPV6_EX; default: return M_HASHTYPE_OPAQUE; }
