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authorSagi Grimberg <sagig@mellanox.com>2014-02-19 17:50:14 +0200
committerNicholas Bellinger <nab@linux-iscsi.org>2014-03-13 12:03:02 -0700
commitacb2bde3e32100f1ab50e38f0db03660a1cb0a06 (patch)
tree086cdc7707bbefab093d6e5ee763b9070d1707be /drivers/target
parent1e3ab99da66312f503b3b28c98173168008a8605 (diff)
Target/transport: Allocate protection sg if needed
In case protection information is involved, allocate protection SG-list for transport. Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
-rw-r--r--drivers/target/target_core_transport.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 2956250b7225..6ddd4cfc53ba 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2039,6 +2039,10 @@ static inline void transport_free_pages(struct se_cmd *cmd)
transport_free_sgl(cmd->t_bidi_data_sg, cmd->t_bidi_data_nents);
cmd->t_bidi_data_sg = NULL;
cmd->t_bidi_data_nents = 0;
+
+ transport_free_sgl(cmd->t_prot_sg, cmd->t_prot_nents);
+ cmd->t_prot_sg = NULL;
+ cmd->t_prot_nents = 0;
}
/**
@@ -2202,6 +2206,14 @@ transport_generic_new_cmd(struct se_cmd *cmd)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
+ if (cmd->prot_type != TARGET_PROT_NORMAL) {
+ ret = target_alloc_sgl(&cmd->t_prot_sg,
+ &cmd->t_prot_nents,
+ cmd->prot_length, true);
+ if (ret < 0)
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+ }
+
ret = target_alloc_sgl(&cmd->t_data_sg, &cmd->t_data_nents,
cmd->data_length, zero_flag);
if (ret < 0)