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Date: Sun, 11 Dec 2022 13:58:47 +0200
From: Shay Drory <shayd@...dia.com>
To: <netdev@...r.kernel.org>,
Stephen Hemminger <stephen@...workplumber.org>,
David Ahern <dsahern@...il.com>, <jiri@...dia.com>
Subject: [PATCH iproute2-next 2/4] devlink: Support setting port function roce cap
Support port function commands to enable / disable RoCE, this is used to
control the port RoCE device capabilities.
When RoCE is disabled for a function of the port, function cannot create
any RoCE specific resources (e.g GID table).
It also saves system memory utilization. For example disabling RoCE
enable a VF/SF to save 1 Mbytes of system memory per function.
Example of a PCI VF port which supports a port function:
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum
0 vfnum 1
function:
hw_addr 00:00:00:00:00:00 roce enabled
$ devlink port function set pci/0000:06:00.0/2 roce disable
$ devlink port show pci/0000:06:00.0/2
pci/0000:06:00.0/2: type eth netdev enp6s0pf0vf1 flavour pcivf pfnum
0 vfnum 1
function:
hw_addr 00:00:00:00:00:00 roce disabled
Signed-off-by: Yishai Hadas <yishaih@...dia.com>
Signed-off-by: Shay Drory <shayd@...dia.com>
Reviewed-by: Moshe Shemesh <moshe@...dia.com>
---
devlink/devlink.c | 35 +++++++++++++++++++++++++++++++++--
1 file changed, 33 insertions(+), 2 deletions(-)
diff --git a/devlink/devlink.c b/devlink/devlink.c
index 4a5eee7a..66cc0415 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -297,6 +297,7 @@ static void ifname_map_free(struct ifname_map *ifname_map)
#define DL_OPT_SELFTESTS BIT(54)
#define DL_OPT_PORT_FN_RATE_TX_PRIORITY BIT(55)
#define DL_OPT_PORT_FN_RATE_TX_WEIGHT BIT(56)
+#define DL_OPT_PORT_FN_CAPS BIT(57)
struct dl_opts {
uint64_t present; /* flags of present items */
@@ -362,6 +363,7 @@ struct dl_opts {
uint32_t linecard_index;
const char *linecard_type;
bool selftests_opt[DEVLINK_ATTR_SELFTEST_ID_MAX + 1];
+ struct nla_bitfield32 port_fn_caps;
};
struct dl {
@@ -2116,6 +2118,18 @@ static int dl_argv_parse(struct dl *dl, uint64_t o_required,
dl_arg_inc(dl);
opts->linecard_type = "";
o_found |= DL_OPT_LINECARD_TYPE;
+ } else if (dl_argv_match(dl, "roce") &&
+ (o_all & DL_OPT_PORT_FN_CAPS)) {
+ bool roce;
+
+ dl_arg_inc(dl);
+ err = dl_argv_bool(dl, &roce);
+ if (err)
+ return err;
+ opts->port_fn_caps.selector |= DEVLINK_PORT_FN_CAP_ROCE;
+ if (roce)
+ opts->port_fn_caps.value |= DEVLINK_PORT_FN_CAP_ROCE;
+ o_found |= DL_OPT_PORT_FN_CAPS;
} else {
pr_err("Unknown option \"%s\"\n", dl_argv(dl));
return -EINVAL;
@@ -2146,6 +2160,10 @@ dl_function_attr_put(struct nlmsghdr *nlh, const struct dl_opts *opts)
if (opts->present & DL_OPT_PORT_FUNCTION_STATE)
mnl_attr_put_u8(nlh, DEVLINK_PORT_FN_ATTR_STATE,
opts->port_fn_state);
+ if (opts->present & DL_OPT_PORT_FN_CAPS)
+ mnl_attr_put(nlh, DEVLINK_PORT_FN_ATTR_CAPS,
+ sizeof(opts->port_fn_caps), &opts->port_fn_caps);
+
mnl_attr_nest_end(nlh, nest);
}
@@ -2336,7 +2354,8 @@ static void dl_opts_put(struct nlmsghdr *nlh, struct dl *dl)
if (opts->present & DL_OPT_TRAP_POLICER_BURST)
mnl_attr_put_u64(nlh, DEVLINK_ATTR_TRAP_POLICER_BURST,
opts->trap_policer_burst);
- if (opts->present & (DL_OPT_PORT_FUNCTION_HW_ADDR | DL_OPT_PORT_FUNCTION_STATE))
+ if (opts->present & (DL_OPT_PORT_FUNCTION_HW_ADDR | DL_OPT_PORT_FUNCTION_STATE |
+ DL_OPT_PORT_FN_CAPS))
dl_function_attr_put(nlh, opts);
if (opts->present & DL_OPT_PORT_FLAVOUR)
mnl_attr_put_u16(nlh, DEVLINK_ATTR_PORT_FLAVOUR, opts->port_flavour);
@@ -4386,6 +4405,7 @@ static void cmd_port_help(void)
pr_err(" devlink port split DEV/PORT_INDEX count COUNT\n");
pr_err(" devlink port unsplit DEV/PORT_INDEX\n");
pr_err(" devlink port function set DEV/PORT_INDEX [ hw_addr ADDR ] [ state { active | inactive } ]\n");
+ pr_err(" [ roce { enable | disable } ]\n");
pr_err(" devlink port function rate { help | show | add | del | set }\n");
pr_err(" devlink port param set DEV/PORT_INDEX name PARAMETER value VALUE cmode { permanent | driverinit | runtime }\n");
pr_err(" devlink port param show [DEV/PORT_INDEX name PARAMETER]\n");
@@ -4499,6 +4519,15 @@ static void pr_out_port_function(struct dl *dl, struct nlattr **tb_port)
print_string(PRINT_ANY, "opstate", " opstate %s",
port_fn_opstate(state));
}
+ if (tb[DEVLINK_PORT_FN_ATTR_CAPS]) {
+ struct nla_bitfield32 *port_fn_caps =
+ mnl_attr_get_payload(tb[DEVLINK_PORT_FN_ATTR_CAPS]);
+
+ if (port_fn_caps->selector & DEVLINK_PORT_FN_CAP_ROCE)
+ print_string(PRINT_ANY, "roce", " roce %s",
+ port_fn_caps->value & DEVLINK_PORT_FN_CAP_ROCE ?
+ "enable" : "disable");
+ }
if (!dl->json_output)
__pr_out_indent_dec();
@@ -4693,6 +4722,7 @@ static int cmd_port_param_show(struct dl *dl)
static void cmd_port_function_help(void)
{
pr_err("Usage: devlink port function set DEV/PORT_INDEX [ hw_addr ADDR ] [ state STATE ]\n");
+ pr_err(" [ roce { enable | disable } ]\n");
pr_err(" devlink port function rate { help | show | add | del | set }\n");
}
@@ -4706,7 +4736,8 @@ static int cmd_port_function_set(struct dl *dl)
return 0;
}
err = dl_argv_parse(dl, DL_OPT_HANDLEP,
- DL_OPT_PORT_FUNCTION_HW_ADDR | DL_OPT_PORT_FUNCTION_STATE);
+ DL_OPT_PORT_FUNCTION_HW_ADDR | DL_OPT_PORT_FUNCTION_STATE |
+ DL_OPT_PORT_FN_CAPS);
if (err)
return err;
--
2.38.1
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