diff options
| author | Terry S. Duncan <terry.s.duncan@linux.intel.com> | 2019-08-19 17:24:02 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-08-20 12:42:40 -0700 |
| commit | 96a1b033ac24ccc58156f05c183b2cba0b9412d5 (patch) | |
| tree | cc39554e98289aeaf1b034067bcf0924d29dd9a5 /net/ncsi | |
| parent | 4651d1802f7063e4d8c0bcad957f46ece0c04024 (diff) | |
| download | lwn-96a1b033ac24ccc58156f05c183b2cba0b9412d5.tar.gz lwn-96a1b033ac24ccc58156f05c183b2cba0b9412d5.zip | |
net/ncsi: Ensure 32-bit boundary for data cksum
The NCSI spec indicates that if the data does not end on a 32 bit
boundary, one to three padding bytes equal to 0x00 shall be present to
align the checksum field to a 32-bit boundary.
Signed-off-by: Terry S. Duncan <terry.s.duncan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ncsi')
| -rw-r--r-- | net/ncsi/ncsi-cmd.c | 2 | ||||
| -rw-r--r-- | net/ncsi/ncsi-rsp.c | 9 |
2 files changed, 7 insertions, 4 deletions
diff --git a/net/ncsi/ncsi-cmd.c b/net/ncsi/ncsi-cmd.c index 5c3fad8cba57..eab4346b0a39 100644 --- a/net/ncsi/ncsi-cmd.c +++ b/net/ncsi/ncsi-cmd.c @@ -54,7 +54,7 @@ static void ncsi_cmd_build_header(struct ncsi_pkt_hdr *h, checksum = ncsi_calculate_checksum((unsigned char *)h, sizeof(*h) + nca->payload); pchecksum = (__be32 *)((void *)h + sizeof(struct ncsi_pkt_hdr) + - nca->payload); + ALIGN(nca->payload, 4)); *pchecksum = htonl(checksum); } diff --git a/net/ncsi/ncsi-rsp.c b/net/ncsi/ncsi-rsp.c index 7581bf919885..d876bd55f356 100644 --- a/net/ncsi/ncsi-rsp.c +++ b/net/ncsi/ncsi-rsp.c @@ -47,7 +47,8 @@ static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, if (ntohs(h->code) != NCSI_PKT_RSP_C_COMPLETED || ntohs(h->reason) != NCSI_PKT_RSP_R_NO_ERROR) { netdev_dbg(nr->ndp->ndev.dev, - "NCSI: non zero response/reason code\n"); + "NCSI: non zero response/reason code %04xh, %04xh\n", + ntohs(h->code), ntohs(h->reason)); return -EPERM; } @@ -55,7 +56,7 @@ static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, * sender doesn't support checksum according to NCSI * specification. */ - pchecksum = (__be32 *)((void *)(h + 1) + payload - 4); + pchecksum = (__be32 *)((void *)(h + 1) + ALIGN(payload, 4) - 4); if (ntohl(*pchecksum) == 0) return 0; @@ -63,7 +64,9 @@ static int ncsi_validate_rsp_pkt(struct ncsi_request *nr, sizeof(*h) + payload - 4); if (*pchecksum != htonl(checksum)) { - netdev_dbg(nr->ndp->ndev.dev, "NCSI: checksum mismatched\n"); + netdev_dbg(nr->ndp->ndev.dev, + "NCSI: checksum mismatched; recd: %08x calc: %08x\n", + *pchecksum, htonl(checksum)); return -EINVAL; } |