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net/bnxt: support WC TCAM shared session

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If the session shares WC TCAM entries with others,
specify it in the session name by attach "-wc_tcam".
Firmware will flush the shared WC TCAM entries if
the last shared session using them is closed.

Signed-off-by: Jay Ding <jay.ding@broadcom.com>
Signed-off-by: Randy Schacher <stuart.schacher@broadcom.com>
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Reviewed-by: Mike Baucom <michael.baucom@broadcom.com>
Reviewed-by: Farah Smith <farah.smith@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
This commit is contained in:
Jay Ding 2021-05-30 14:28:55 +05:30 committed by Ajit Khaparde
parent 0bb109e715
commit e32312d124
2 changed files with 44 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/net/bnxt/tf_core/tf_msg.c
View File

@ -58,6 +58,16 @@ static_assert(sizeof(struct hwrm_tf_tbl_type_set_input) ==
*/
#define TF_PCI_BUF_SIZE_MAX 88
/**
* This is the length of shared session name "tf_share"
*/
#define TF_SHARED_SESSION_NAME_LEN 8
/**
* This is the length of tcam shared session name "tf_shared-wc_tcam"
*/
#define TF_TCAM_SHARED_SESSION_NAME_LEN 17
/**
* If data bigger than TF_PCI_BUF_SIZE_MAX then use DMA method
*/
@ -126,13 +136,17 @@ tf_msg_session_open(struct bnxt *bp,
struct hwrm_tf_session_open_output resp = { 0 };
struct tfp_send_msg_parms parms = { 0 };
int name_len;
char *name;
char *session_name;
char *tcam_session_name;
/* Populate the request */
name_len = strnlen(ctrl_chan_name, TF_SESSION_NAME_MAX);
name = &ctrl_chan_name[name_len - strlen("tf_shared")];
if (!strncmp(name, "tf_shared", strlen("tf_shared")))
tfp_memcpy(&req.session_name, name, strlen("tf_share"));
session_name = &ctrl_chan_name[name_len - strlen("tf_shared")];
tcam_session_name = &ctrl_chan_name[name_len - strlen("tf_shared-wc_tcam")];
if (!strncmp(tcam_session_name, "tf_shared-wc_tcam", strlen("tf_shared-wc_tcam")))
tfp_memcpy(&req.session_name, tcam_session_name, TF_TCAM_SHARED_SESSION_NAME_LEN);
else if (!strncmp(session_name, "tf_shared", strlen("tf_shared")))
tfp_memcpy(&req.session_name, session_name, TF_SHARED_SESSION_NAME_LEN);
else
tfp_memcpy(&req.session_name, ctrl_chan_name, TF_SESSION_NAME_MAX);
@ -177,6 +191,9 @@ tf_msg_session_client_register(struct tf *tfp,
struct tfp_send_msg_parms parms = { 0 };
uint8_t fw_session_id;
struct tf_dev_info *dev;
int name_len;
char *session_name;
char *tcam_session_name;
/* Retrieve the device information */
rc = tf_session_get_device(tfs, &dev);
@ -197,9 +214,24 @@ tf_msg_session_client_register(struct tf *tfp,
/* Populate the request */
req.fw_session_id = tfp_cpu_to_le_32(fw_session_id);
tfp_memcpy(&req.session_client_name,
ctrl_channel_name,
TF_SESSION_NAME_MAX);
name_len = strnlen(ctrl_channel_name, TF_SESSION_NAME_MAX);
session_name = &ctrl_channel_name[name_len - strlen("tf_shared")];
tcam_session_name = &ctrl_channel_name[name_len -
strlen("tf_shared-wc_tcam")];
if (!strncmp(tcam_session_name,
"tf_shared-wc_tcam",
strlen("tf_shared-wc_tcam")))
tfp_memcpy(&req.session_client_name,
tcam_session_name,
TF_TCAM_SHARED_SESSION_NAME_LEN);
else if (!strncmp(session_name, "tf_shared", strlen("tf_shared")))
tfp_memcpy(&req.session_client_name,
session_name,
TF_SHARED_SESSION_NAME_LEN);
else
tfp_memcpy(&req.session_client_name,
ctrl_channel_name,
TF_SESSION_NAME_MAX);
parms.tf_type = HWRM_TF_SESSION_REGISTER;
parms.req_data = (uint32_t *)&req;

5
drivers/net/bnxt/tf_core/tf_session.c
View File

@ -188,6 +188,11 @@ tf_session_create(struct tf *tfp,
if (!strncmp(name, "tf_shared", strlen("tf_shared")))
session->shared_session = true;
name = &parms->open_cfg->ctrl_chan_name[name_len -
strlen("tf_shared-wc_tcam")];
if (!strncmp(name, "tf_shared-wc_tcam", strlen("tf_shared-wc_tcam")))
session->shared_session = true;
if (session->shared_session && shared_session_creator) {
session->shared_session_creator = true;
parms->open_cfg->shared_session_creator = true;