The branch stable/14 has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=aee8d42a37ac34e20af6b4b4a890e7221d200330
commit aee8d42a37ac34e20af6b4b4a890e7221d200330 Author: John Baldwin <[email protected]> AuthorDate: 2025-05-13 13:57:18 +0000 Commit: John Baldwin <[email protected]> CommitDate: 2026-01-29 15:17:47 +0000 cxgbe nic TLS: Fix requests with 8 bytes of immediate data padding Requests whose immediate data do not end on a 16-byte boundary are padded with zeroes before the next WR command. Since ULP commands are 8 byte aligned, if there are more than 8 bytes of padding, the immediate data is padded with zeroes up to an 8 byte boundary and the last 8 bytes contain a ULP NOOP command. In the case of exactly 8 bytes of padding, the result should be that no zeroes are inserted, only the ULP NOOP. However, the code was actually inserting 8 bytes of zero padding followed by the ULP NOOP causing the following real command to be misaligned. Fix this by skipping the zero padding if there exactly 8 padding bytes. Reported by: Sony Arpita Das @ Chelsio Sponsored by: Chelsio Communications (cherry picked from commit 2befd06588325c541d400fcc4915a1adfd1c7d17) --- sys/dev/cxgbe/crypto/t6_kern_tls.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/sys/dev/cxgbe/crypto/t6_kern_tls.c b/sys/dev/cxgbe/crypto/t6_kern_tls.c index 2173cb670874..0e7bd305869b 100644 --- a/sys/dev/cxgbe/crypto/t6_kern_tls.c +++ b/sys/dev/cxgbe/crypto/t6_kern_tls.c @@ -1794,9 +1794,11 @@ ktls_write_tls_wr(struct tlspcb *tlsp, struct sge_txq *txq, void *dst, } if (imm_len % 16 != 0) { - /* Zero pad to an 8-byte boundary. */ - memset(out, 0, 8 - (imm_len % 8)); - out += 8 - (imm_len % 8); + if (imm_len % 8 != 0) { + /* Zero pad to an 8-byte boundary. */ + memset(out, 0, 8 - (imm_len % 8)); + out += 8 - (imm_len % 8); + } /* * Insert a ULP_TX_SC_NOOP if needed so the SGL is
