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Commit acb2bde3 authored by Sagi Grimberg's avatar Sagi Grimberg Committed by Nicholas Bellinger
Browse files

Target/transport: Allocate protection sg if needed 



In case protection information is involved, allocate
protection SG-list for transport.

Signed-off-by: default avatarSagi Grimberg <sagig@mellanox.com>
Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent 1e3ab99d

drivers/target/target_core_transport.c

+12 −0
Original line number Diff line number Diff line
@@ -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)