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Date: Mon, 16 May 2011 16:58:03 +0100
From: Ben Hutchings <bhutchings@...arflare.com>
To: netdev@...r.kernel.org
Cc: linux-net-drivers@...arflare.com,
Michał Mirosław <mirq-linux@...e.qmqm.pl>,
netdev@...r.kernel.org, David Miller <davem@...emloft.net>
Subject: [RFC PATCH ethtool 3/3] ethtool: Use ETHTOOL_{G,S}FEATURES where
available
Also use the new structures in any case.
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
ethtool.c | 294 +++++++++++++++++++++++++++++++++++++++++--------------------
1 files changed, 199 insertions(+), 95 deletions(-)
diff --git a/ethtool.c b/ethtool.c
index 5eeca64..db1873c 100644
--- a/ethtool.c
+++ b/ethtool.c
@@ -297,8 +297,7 @@ static void show_usage(void)
static char *devname = NULL;
static int goffload_changed = 0;
-static u32 off_features_wanted = 0;
-static u32 off_features_mask = 0;
+struct ethtool_set_features_block off_features;
static struct ethtool_pauseparam epause;
static int gpause_changed = 0;
@@ -439,30 +438,30 @@ static struct cmdline_info cmdline_seeprom[] = {
};
static struct cmdline_info cmdline_offload[] = {
- { "rx", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_RXCSUM, &off_features_mask },
- { "tx", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_ALL_CSUM, &off_features_mask },
- { "sg", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_SG, &off_features_mask },
- { "tso", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_ALL_TSO, &off_features_mask },
- { "ufo", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_UFO, &off_features_mask },
- { "gso", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_GSO, &off_features_mask },
- { "lro", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_LRO, &off_features_mask },
- { "gro", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_GRO, &off_features_mask },
- { "rxvlan", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_HW_VLAN_TX, &off_features_mask },
- { "txvlan", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_HW_VLAN_TX, &off_features_mask },
- { "ntuple", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_NTUPLE, &off_features_mask },
- { "rxhash", CMDL_FLAG, &off_features_wanted, NULL,
- NETIF_F_RXHASH, &off_features_mask },
+ { "rx", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_RXCSUM, &off_features.valid },
+ { "tx", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_ALL_CSUM, &off_features.valid },
+ { "sg", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_SG, &off_features.valid },
+ { "tso", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_ALL_TSO, &off_features.valid },
+ { "ufo", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_UFO, &off_features.valid },
+ { "gso", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_GSO, &off_features.valid },
+ { "lro", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_LRO, &off_features.valid },
+ { "gro", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_GRO, &off_features.valid },
+ { "rxvlan", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_HW_VLAN_TX, &off_features.valid },
+ { "txvlan", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_HW_VLAN_TX, &off_features.valid },
+ { "ntuple", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_NTUPLE, &off_features.valid },
+ { "rxhash", CMDL_FLAG, &off_features.requested, NULL,
+ NETIF_F_RXHASH, &off_features.valid },
};
static struct cmdline_info cmdline_pause[] = {
@@ -1807,7 +1806,8 @@ static const struct {
{ "receive-hashing", 0, NETIF_F_RXHASH },
};
-static int dump_offload(u32 active, u32 mask)
+static int
+dump_offload(const struct ethtool_get_features_block *features, u32 mask)
{
u32 value;
int i;
@@ -1816,9 +1816,12 @@ static int dump_offload(u32 active, u32 mask)
value = off_feature_def[i].value;
if (!(mask & value))
continue;
- printf("%s: %s\n",
+ printf("%s: %s%s%s\n",
off_feature_def[i].long_name,
- (active & value) ? "on" : "off");
+ (features->active & value) ? "on" : "off",
+ (features->requested & ~features->active & value) ?
+ " [requested on]" : "",
+ !(features->available & value) ? " [unchangeable]" : "");
}
return 0;
@@ -2149,41 +2152,65 @@ static const u32 flags_dup_features =
(ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
ETH_FLAG_RXHASH);
-static int get_offload(int fd, struct ifreq *ifr, u32 *features)
+static int get_offload(int fd, struct ifreq *ifr,
+ struct ethtool_get_features_block *pfeatures)
{
+ struct {
+ struct ethtool_gfeatures cmd;
+ struct ethtool_get_features_block data[1];
+ } features;
struct ethtool_value eval;
int err, allfail = 1;
u32 value;
int i;
- *features = 0;
+ features.cmd.cmd = ETHTOOL_GFEATURES;
+ features.cmd.size = ARRAY_SIZE(features.data);
+ ifr->ifr_data = (caddr_t)&features;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err == 0) {
+ allfail = 0;
+ pfeatures[0] = features.data[0];
+ } else if (errno != EOPNOTSUPP && errno != EPERM) {
+ perror("Cannot get device offload settings");
+ } else {
+ memset(pfeatures, 0, sizeof(*pfeatures));
- for (i = 0; i < ARRAY_SIZE(off_feature_def); i++) {
- value = off_feature_def[i].value;
- if (!off_feature_def[i].cmd)
- continue;
- eval.cmd = off_feature_def[i].cmd;
+ for (i = 0; i < ARRAY_SIZE(off_feature_def); i++) {
+ value = off_feature_def[i].value;
+
+ /* Assume that anything we can get is changeable */
+ pfeatures[0].available |= value;
+
+ if (!off_feature_def[i].cmd)
+ continue;
+
+ eval.cmd = off_feature_def[i].cmd;
+ ifr->ifr_data = (caddr_t)&eval;
+ err = send_ioctl(fd, ifr);
+ if (err) {
+ fprintf(stderr,
+ "Cannot get device %s settings: %m\n",
+ off_feature_def[i].long_name);
+ } else {
+ if (eval.data)
+ pfeatures[0].active |= value;
+ allfail = 0;
+ }
+ }
+
+ eval.cmd = ETHTOOL_GFLAGS;
ifr->ifr_data = (caddr_t)&eval;
- err = send_ioctl(fd, ifr);
+ err = ioctl(fd, SIOCETHTOOL, ifr);
if (err) {
- fprintf(stderr,
- "Cannot get device %s settings: %m\n",
- off_feature_def[i].long_name);
+ perror("Cannot get device flags");
} else {
- if (eval.data)
- *features |= value;
+ pfeatures[0].active |=
+ eval.data & flags_dup_features;
allfail = 0;
}
- }
- eval.cmd = ETHTOOL_GFLAGS;
- ifr->ifr_data = (caddr_t)&eval;
- err = ioctl(fd, SIOCETHTOOL, ifr);
- if (err) {
- perror("Cannot get device flags");
- } else {
- *features |= eval.data & flags_dup_features;
- allfail = 0;
+ pfeatures[0].requested = pfeatures[0].active;
}
return allfail;
@@ -2191,7 +2218,7 @@ static int get_offload(int fd, struct ifreq *ifr, u32 *features)
static int do_goffload(int fd, struct ifreq *ifr)
{
- u32 features;
+ struct ethtool_get_features_block features;
fprintf(stdout, "Offload parameters for %s:\n", devname);
@@ -2200,79 +2227,156 @@ static int do_goffload(int fd, struct ifreq *ifr)
return 83;
}
- return dump_offload(features, ~(u32)0);
+ return dump_offload(&features, ~(u32)0);
}
static int do_soffload(int fd, struct ifreq *ifr)
{
- u32 old_features, new_features, diff;
- struct ethtool_value eval;
+ struct ethtool_get_features_block old_features, new_features;
+ struct {
+ struct ethtool_sfeatures cmd;
+ struct ethtool_set_features_block data[1];
+ } set_features;
+ int failed;
+ u32 diff;
int err;
int i;
+ if (off_features.valid == 0) {
+ fprintf(stdout, "no offload settings changed\n");
+ return 0;
+ }
+
if (get_offload(fd, ifr, &old_features)) {
fprintf(stderr, "no offload info available\n");
return 1;
}
+ set_features.cmd.cmd = ETHTOOL_SFEATURES;
+ set_features.cmd.size = ARRAY_SIZE(set_features.data);
+ set_features.data[0] = off_features;
+
for (i = 0; i < ARRAY_SIZE(off_feature_def); i++) {
- if (!off_feature_def[i].cmd)
+ u32 value = off_feature_def[i].value;
+
+ if (!(off_features.valid & value))
continue;
- if (off_features_mask & off_feature_def[i].value) {
- eval.cmd = off_feature_def[i].cmd + 1;
- eval.data = !!(off_features_wanted &
- off_feature_def[i].value);
- ifr->ifr_data = (caddr_t)&eval;
- err = send_ioctl(fd, ifr);
- if (err) {
- fprintf(stderr,
- "Cannot set device %s settings: %m\n",
- off_feature_def[i].long_name);
- return 1;
- }
+ if (!(old_features.available & value)) {
+ /* None of these features can be changed */
+ fprintf(stderr,
+ "Cannot set device %s settings: "
+ "Operation not supported\n",
+ off_feature_def[i].long_name);
+ return 1;
}
+ /* At least some of these features can be
+ * enabled; mask out any that cannot
+ */
+ set_features.data[0].valid &=
+ ~(value & ~old_features.available);
}
- if (off_features_mask & flags_dup_features) {
- eval.cmd = ETHTOOL_GFLAGS;
- eval.data = 0;
- ifr->ifr_data = (caddr_t)&eval;
- err = ioctl(fd, SIOCETHTOOL, ifr);
- if (err) {
- perror("Cannot get device flag settings");
- return 91;
+
+ ifr->ifr_data = (caddr_t)&set_features;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err >= 0) {
+ /* We'll break down the warnings/errors below */
+ } else if (errno != EOPNOTSUPP && errno != EPERM) {
+ perror("Cannot set device offload settings");
+ return 1;
+ } else {
+ struct ethtool_value eval;
+
+ for (i = 0; i < ARRAY_SIZE(off_feature_def); i++) {
+ if (!off_feature_def[i].cmd)
+ continue;
+ if (off_features.valid & off_feature_def[i].value) {
+ eval.cmd = off_feature_def[i].cmd + 1;
+ eval.data = !!(off_features.requested &
+ off_feature_def[i].value);
+ ifr->ifr_data = (caddr_t)&eval;
+ err = send_ioctl(fd, ifr);
+ if (err) {
+ fprintf(stderr,
+ "Cannot set device %s settings: %m\n",
+ off_feature_def[i].long_name);
+ return 1;
+ }
+ }
}
+ if (off_features.valid & flags_dup_features) {
+ eval.cmd = ETHTOOL_GFLAGS;
+ eval.data = 0;
+ ifr->ifr_data = (caddr_t)&eval;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err) {
+ perror("Cannot get device flag settings");
+ return 91;
+ }
- eval.cmd = ETHTOOL_SFLAGS;
- eval.data &= ~(off_features_mask & flags_dup_features);
- eval.data |= (off_features_wanted &
- flags_dup_features);
+ eval.cmd = ETHTOOL_SFLAGS;
+ eval.data &= ~(off_features.valid & flags_dup_features);
+ eval.data |= (off_features.requested &
+ flags_dup_features);
- err = ioctl(fd, SIOCETHTOOL, ifr);
- if (err) {
- perror("Cannot set device flag settings");
- return 92;
+ err = ioctl(fd, SIOCETHTOOL, ifr);
+ if (err) {
+ perror("Cannot set device flag settings");
+ return 92;
+ }
}
}
- if (off_features_mask == 0) {
- fprintf(stdout, "no offload settings changed\n");
- return 0;
- }
-
- /* Were any additional changes made automatically? */
if (get_offload(fd, ifr, &new_features)) {
fprintf(stderr, "no offload info available\n");
return 1;
}
- diff = ((old_features & ~off_features_mask) |
- (off_features_wanted & off_features_mask)) ^
- new_features;
+
+ failed = 0;
+
+ /* Report specific failures */
+ for (i = 0; i < ARRAY_SIZE(off_feature_def); i++) {
+ if (!(off_feature_def[i].value & off_features.valid))
+ continue;
+
+ /* For offloads where we have one name for multiple
+ * feature flags, squash them into a boolean.
+ */
+ if (!(off_features.requested & off_feature_def[i].value) !=
+ !(new_features.active & off_feature_def[i].value)) {
+ int did1 = 0;
+
+ fprintf(stderr,
+ "Cannot set device %s settings",
+ off_feature_def[i].long_name);
+ if (err & ETHTOOL_F_WISH) {
+ fprintf(stderr,
+ ": Feature depends on other settings");
+ did1++;
+ }
+ /* Report any remaining warning flags (including
+ * ETHTOOL_F_UNSUPPORTED, which should not be set
+ * since we checked for unsupported flags above).
+ */
+ if (err & ~ETHTOOL_F_WISH) {
+ fprintf(stderr, "%s Warning flags %#x",
+ did1 ? ";" : ":",
+ err & ~ETHTOOL_F_WISH);
+ }
+ fprintf(stderr, "\n");
+
+ failed = 1;
+ }
+ }
+
+ /* Were any additional changes made automatically? */
+ diff = (new_features.active ^ old_features.active) &
+ ~off_features.valid;
if (diff) {
printf("Additional changes:\n");
- dump_offload(new_features, diff);
+ dump_offload(&new_features, diff);
}
- return 0;
+ return failed;
}
static int do_gset(int fd, struct ifreq *ifr)
--
1.7.4
--
Ben Hutchings, Senior Software Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
--
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