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net/devlink: Add E-Switch encapsulation control 

This is an e-switch global knob to enable HW support for applying
encapsulation/decapsulation to VF traffic as part of SRIOV e-switch offloading.

The actual encap/decap is carried out (along with the matching and other actions)
per offloaded e-switch rules, e.g as done when offloading the TC tunnel key action.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
zero-colors
Roi Dayan 2016-09-25 13:52:44 +03:00 committed by Saeed Mahameed
parent fb796707d7
commit f43e9b069a
3 changed files with 32 additions and 3 deletions
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2
include/net/devlink.h
View File

@ -268,6 +268,8 @@ struct devlink_ops {
int (*eswitch_mode_set)(struct devlink *devlink, u16 mode);
int (*eswitch_inline_mode_get)(struct devlink *devlink, u8 *p_inline_mode);
int (*eswitch_inline_mode_set)(struct devlink *devlink, u8 inline_mode);
int (*eswitch_encap_mode_get)(struct devlink *devlink, u8 *p_encap_mode);
int (*eswitch_encap_mode_set)(struct devlink *devlink, u8 encap_mode);
};
static inline void *devlink_priv(struct devlink *devlink)

7
include/uapi/linux/devlink.h
View File

@ -119,6 +119,11 @@ enum devlink_eswitch_inline_mode {
DEVLINK_ESWITCH_INLINE_MODE_TRANSPORT,
};
enum devlink_eswitch_encap_mode {
DEVLINK_ESWITCH_ENCAP_MODE_NONE,
DEVLINK_ESWITCH_ENCAP_MODE_BASIC,
};
enum devlink_attr {
/* don't change the order or add anything between, this is ABI! */
DEVLINK_ATTR_UNSPEC,
@ -195,6 +200,8 @@ enum devlink_attr {
DEVLINK_ATTR_PAD,
DEVLINK_ATTR_ESWITCH_ENCAP_MODE, /* u8 */
/* add new attributes above here, update the policy in devlink.c */
__DEVLINK_ATTR_MAX,

26
net/core/devlink.c
View File

@ -1397,10 +1397,10 @@ static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
u32 seq, int flags)
{
const struct devlink_ops *ops = devlink->ops;
u8 inline_mode, encap_mode;
void *hdr;
int err = 0;
u16 mode;
u8 inline_mode;
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
if (!hdr)
@ -1429,6 +1429,15 @@ static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
goto nla_put_failure;
}
if (ops->eswitch_encap_mode_get) {
err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
if (err)
goto nla_put_failure;
err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
if (err)
goto nla_put_failure;
}
genlmsg_end(msg, hdr);
return 0;
@ -1468,9 +1477,9 @@ static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
{
struct devlink *devlink = info->user_ptr[0];
const struct devlink_ops *ops = devlink->ops;
u16 mode;
u8 inline_mode;
u8 inline_mode, encap_mode;
int err = 0;
u16 mode;
if (!ops)
return -EOPNOTSUPP;
@ -1493,6 +1502,16 @@ static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
if (err)
return err;
}
if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
if (!ops->eswitch_encap_mode_set)
return -EOPNOTSUPP;
encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
err = ops->eswitch_encap_mode_set(devlink, encap_mode);
if (err)
return err;
}
return 0;
}
@ -2190,6 +2209,7 @@ static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
[DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 },
[DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 },
[DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 },
[DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 },
[DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING },
[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 },
};