Date: Fri, 20 Sep 2024 02:43:38 GMT From: Kevin Bowling <kbowling@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 1b80ac6fa64e - main - ixgbe: increase DCB BW calculation for MTU Message-ID: <202409200243.48K2hcWR097957@gitrepo.freebsd.org>
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The branch main has been updated by kbowling: URL: https://cgit.FreeBSD.org/src/commit/?id=1b80ac6fa64eaa575b99521cbd71a3780bf5139b commit 1b80ac6fa64eaa575b99521cbd71a3780bf5139b Author: Radoslaw Tyl <radoslawx.tyl@intel.com> AuthorDate: 2024-09-20 02:42:39 +0000 Commit: Kevin Bowling <kbowling@FreeBSD.org> CommitDate: 2024-09-20 02:42:39 +0000 ixgbe: increase DCB BW calculation for MTU Change max credit and credit refill to a maximum possible value, 9128. Too small values cause the incorrect calculation of the bandwidth limits to each traffic class for frames larger than 4088 bytes. Signed-off-by: Radoslaw Tyl <radoslawx.tyl@intel.com> Reviewed-by: Piotr Skajewski <piotrx.skajewski@intel.com> Reviewed-by: Slawomir Mrozowicz <slawomirx.mrozowicz@intel.com> Reviewed-by: Alice Michael <alice.michael@intel.com> Tested-by: Piotr Skajewski <piotrx.skajewski@intel.com> Obtained from: DPDK (440823f) MFC after: 1 week --- sys/dev/ixgbe/ixgbe_dcb.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sys/dev/ixgbe/ixgbe_dcb.h b/sys/dev/ixgbe/ixgbe_dcb.h index b31dfae0cdfa..54decd4d081d 100644 --- a/sys/dev/ixgbe/ixgbe_dcb.h +++ b/sys/dev/ixgbe/ixgbe_dcb.h @@ -40,9 +40,9 @@ /* DCB defines */ /* DCB credit calculation defines */ #define IXGBE_DCB_CREDIT_QUANTUM 64 -#define IXGBE_DCB_MAX_CREDIT_REFILL 200 /* 200 * 64B = 12800B */ +#define IXGBE_DCB_MAX_CREDIT_REFILL 511 /* 0x1FF * 64B = 32704B */ #define IXGBE_DCB_MAX_TSO_SIZE (32 * 1024) /* Max TSO pkt size in DCB*/ -#define IXGBE_DCB_MAX_CREDIT (2 * IXGBE_DCB_MAX_CREDIT_REFILL) +#define IXGBE_DCB_MAX_CREDIT 4095 /* Maximum credit supported: 256KB * 1024 / 64B */ /* 513 for 32KB TSO packet */ #define IXGBE_DCB_MIN_TSO_CREDIT \
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