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iser-target: Ignore non TEXT + LOGOUT opcodes for discovery

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This patch adds a check in isert_rx_opcode() to ignore non TEXT + LOGOUT
opcodes when SessionType=Discovery has been negotiated.

Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Nicholas Bellinger 2013-07-07 17:45:08 -07:00
parent b79fafac70
commit ca40d24eb8
1 changed files with 8 additions and 0 deletions
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8
drivers/infiniband/ulp/isert/ib_isert.c
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@ -1066,11 +1066,19 @@ isert_rx_opcode(struct isert_conn *isert_conn, struct iser_rx_desc *rx_desc,
{
struct iscsi_hdr *hdr = &rx_desc->iscsi_header;
struct iscsi_conn *conn = isert_conn->conn;
struct iscsi_session *sess = conn->sess;
struct iscsi_cmd *cmd;
struct isert_cmd *isert_cmd;
int ret = -EINVAL;
u8 opcode = (hdr->opcode & ISCSI_OPCODE_MASK);
if (sess->sess_ops->SessionType &&
(!(opcode & ISCSI_OP_TEXT) || !(opcode & ISCSI_OP_LOGOUT))) {
pr_err("Got illegal opcode: 0x%02x in SessionType=Discovery,"
" ignoring\n", opcode);
return 0;
}
switch (opcode) {
case ISCSI_OP_SCSI_CMD:
cmd = iscsit_allocate_cmd(conn, GFP_KERNEL);