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-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_net.h3
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_net_common.c22
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c4
-rw-r--r--drivers/net/virtio_net.c11
-rw-r--r--include/linux/netdevice.h10
-rw-r--r--include/linux/netlink.h8
-rw-r--r--net/core/dev.c5
-rw-r--r--net/core/rtnetlink.c13
8 files changed, 52 insertions, 24 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net.h b/drivers/net/ethernet/netronome/nfp/nfp_net.h
index 38b41fdeaa8f..fcf81b3be830 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net.h
@@ -818,7 +818,8 @@ nfp_net_irqs_assign(struct nfp_net *nn, struct msix_entry *irq_entries,
unsigned int n);
struct nfp_net_dp *nfp_net_clone_dp(struct nfp_net *nn);
-int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *new);
+int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *new,
+ struct netlink_ext_ack *extack);
bool nfp_net_link_changed_read_clear(struct nfp_net *nn);
int nfp_net_refresh_eth_port(struct nfp_net *nn);
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index b9f3548bb65f..db20376260f5 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -2524,24 +2524,27 @@ struct nfp_net_dp *nfp_net_clone_dp(struct nfp_net *nn)
return new;
}
-static int nfp_net_check_config(struct nfp_net *nn, struct nfp_net_dp *dp)
+static int
+nfp_net_check_config(struct nfp_net *nn, struct nfp_net_dp *dp,
+ struct netlink_ext_ack *extack)
{
/* XDP-enabled tests */
if (!dp->xdp_prog)
return 0;
if (dp->fl_bufsz > PAGE_SIZE) {
- nn_warn(nn, "MTU too large w/ XDP enabled\n");
+ NL_MOD_TRY_SET_ERR_MSG(extack, "MTU too large w/ XDP enabled");
return -EINVAL;
}
if (dp->num_tx_rings > nn->max_tx_rings) {
- nn_warn(nn, "Insufficient number of TX rings w/ XDP enabled\n");
+ NL_MOD_TRY_SET_ERR_MSG(extack, "Insufficient number of TX rings w/ XDP enabled");
return -EINVAL;
}
return 0;
}
-int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *dp)
+int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *dp,
+ struct netlink_ext_ack *extack)
{
int r, err;
@@ -2553,7 +2556,7 @@ int nfp_net_ring_reconfig(struct nfp_net *nn, struct nfp_net_dp *dp)
dp->num_r_vecs = max(dp->num_rx_rings, dp->num_stack_tx_rings);
- err = nfp_net_check_config(nn, dp);
+ err = nfp_net_check_config(nn, dp, extack);
if (err)
goto exit_free_dp;
@@ -2628,7 +2631,7 @@ static int nfp_net_change_mtu(struct net_device *netdev, int new_mtu)
dp->mtu = new_mtu;
- return nfp_net_ring_reconfig(nn, dp);
+ return nfp_net_ring_reconfig(nn, dp, NULL);
}
static void nfp_net_stat64(struct net_device *netdev,
@@ -2944,9 +2947,10 @@ static int nfp_net_xdp_offload(struct nfp_net *nn, struct bpf_prog *prog)
return ret;
}
-static int nfp_net_xdp_setup(struct nfp_net *nn, struct bpf_prog *prog)
+static int nfp_net_xdp_setup(struct nfp_net *nn, struct netdev_xdp *xdp)
{
struct bpf_prog *old_prog = nn->dp.xdp_prog;
+ struct bpf_prog *prog = xdp->prog;
struct nfp_net_dp *dp;
int err;
@@ -2969,7 +2973,7 @@ static int nfp_net_xdp_setup(struct nfp_net *nn, struct bpf_prog *prog)
dp->rx_dma_off = prog ? XDP_PACKET_HEADROOM - nn->dp.rx_offset : 0;
/* We need RX reconfig to remap the buffers (BIDIR vs FROM_DEV) */
- err = nfp_net_ring_reconfig(nn, dp);
+ err = nfp_net_ring_reconfig(nn, dp, xdp->extack);
if (err)
return err;
@@ -2987,7 +2991,7 @@ static int nfp_net_xdp(struct net_device *netdev, struct netdev_xdp *xdp)
switch (xdp->command) {
case XDP_SETUP_PROG:
- return nfp_net_xdp_setup(nn, xdp->prog);
+ return nfp_net_xdp_setup(nn, xdp);
case XDP_QUERY_PROG:
xdp->prog_attached = !!nn->dp.xdp_prog;
return 0;
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
index a704efd4e314..abbb47e60cc3 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
@@ -309,7 +309,7 @@ static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt)
dp->rxd_cnt = rxd_cnt;
dp->txd_cnt = txd_cnt;
- return nfp_net_ring_reconfig(nn, dp);
+ return nfp_net_ring_reconfig(nn, dp, NULL);
}
static int nfp_net_set_ringparam(struct net_device *netdev,
@@ -880,7 +880,7 @@ static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx,
if (dp->xdp_prog)
dp->num_tx_rings += total_rx;
- return nfp_net_ring_reconfig(nn, dp);
+ return nfp_net_ring_reconfig(nn, dp, NULL);
}
static int nfp_net_set_channels(struct net_device *netdev,
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 7877551fe4e0..3d0bc484b3d7 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1878,7 +1878,8 @@ err:
return ret;
}
-static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog)
+static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog,
+ struct netlink_ext_ack *extack)
{
unsigned long int max_sz = PAGE_SIZE - sizeof(struct padded_vnet_hdr);
struct virtnet_info *vi = netdev_priv(dev);
@@ -1890,16 +1891,17 @@ static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog)
virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_TSO6) ||
virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_ECN) ||
virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_UFO)) {
- netdev_warn(dev, "can't set XDP while host is implementing LRO, disable LRO first\n");
+ NL_SET_ERR_MSG(extack, "can't set XDP while host is implementing LRO, disable LRO first");
return -EOPNOTSUPP;
}
if (vi->mergeable_rx_bufs && !vi->any_header_sg) {
- netdev_warn(dev, "XDP expects header/data in single page, any_header_sg required\n");
+ NL_SET_ERR_MSG(extack, "XDP expects header/data in single page, any_header_sg required");
return -EINVAL;
}
if (dev->mtu > max_sz) {
+ NL_SET_ERR_MSG(extack, "MTU too large to enable XDP");
netdev_warn(dev, "XDP requires MTU less than %lu\n", max_sz);
return -EINVAL;
}
@@ -1910,6 +1912,7 @@ static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog)
/* XDP requires extra queues for XDP_TX */
if (curr_qp + xdp_qp > vi->max_queue_pairs) {
+ NL_SET_ERR_MSG(extack, "Too few free TX rings available");
netdev_warn(dev, "request %i queues but max is %i\n",
curr_qp + xdp_qp, vi->max_queue_pairs);
return -ENOMEM;
@@ -1971,7 +1974,7 @@ static int virtnet_xdp(struct net_device *dev, struct netdev_xdp *xdp)
{
switch (xdp->command) {
case XDP_SETUP_PROG:
- return virtnet_xdp_set(dev, xdp->prog);
+ return virtnet_xdp_set(dev, xdp->prog, xdp->extack);
case XDP_QUERY_PROG:
xdp->prog_attached = virtnet_xdp_query(dev);
return 0;
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 6847714a5ae3..9c23bd2efb56 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -813,11 +813,16 @@ enum xdp_netdev_command {
XDP_QUERY_PROG,
};
+struct netlink_ext_ack;
+
struct netdev_xdp {
enum xdp_netdev_command command;
union {
/* XDP_SETUP_PROG */
- struct bpf_prog *prog;
+ struct {
+ struct bpf_prog *prog;
+ struct netlink_ext_ack *extack;
+ };
/* XDP_QUERY_PROG */
bool prog_attached;
};
@@ -3291,7 +3296,8 @@ int dev_get_phys_port_id(struct net_device *dev,
int dev_get_phys_port_name(struct net_device *dev,
char *name, size_t len);
int dev_change_proto_down(struct net_device *dev, bool proto_down);
-int dev_change_xdp_fd(struct net_device *dev, int fd, u32 flags);
+int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack,
+ int fd, u32 flags);
struct sk_buff *validate_xmit_skb_list(struct sk_buff *skb, struct net_device *dev);
struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
struct netdev_queue *txq, int *ret);
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index 8d2a8924705c..c20395edf2de 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -92,6 +92,14 @@ struct netlink_ext_ack {
(extack)->_msg = _msg; \
} while (0)
+#define NL_MOD_TRY_SET_ERR_MSG(extack, msg) do { \
+ static const char _msg[] = KBUILD_MODNAME ": " msg; \
+ struct netlink_ext_ack *_extack = (extack); \
+ \
+ if (_extack) \
+ _extack->_msg = _msg; \
+} while (0)
+
extern void netlink_kernel_release(struct sock *sk);
extern int __netlink_change_ngroups(struct sock *sk, unsigned int groups);
extern int netlink_change_ngroups(struct sock *sk, unsigned int groups);
diff --git a/net/core/dev.c b/net/core/dev.c
index 8371a01eee87..35a06cebb282 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6854,12 +6854,14 @@ EXPORT_SYMBOL(dev_change_proto_down);
/**
* dev_change_xdp_fd - set or clear a bpf program for a device rx path
* @dev: device
+ * @extact: netlink extended ack
* @fd: new program fd or negative value to clear
* @flags: xdp-related flags
*
* Set or clear a bpf program for a device
*/
-int dev_change_xdp_fd(struct net_device *dev, int fd, u32 flags)
+int dev_change_xdp_fd(struct net_device *dev, struct netlink_ext_ack *extack,
+ int fd, u32 flags)
{
int (*xdp_op)(struct net_device *dev, struct netdev_xdp *xdp);
const struct net_device_ops *ops = dev->netdev_ops;
@@ -6892,6 +6894,7 @@ int dev_change_xdp_fd(struct net_device *dev, int fd, u32 flags)
memset(&xdp, 0, sizeof(xdp));
xdp.command = XDP_SETUP_PROG;
+ xdp.extack = extack;
xdp.prog = prog;
err = xdp_op(dev, &xdp);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 9031a6c8bfa7..6e67315ec368 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1919,6 +1919,7 @@ static int do_set_master(struct net_device *dev, int ifindex)
#define DO_SETLINK_NOTIFY 0x03
static int do_setlink(const struct sk_buff *skb,
struct net_device *dev, struct ifinfomsg *ifm,
+ struct netlink_ext_ack *extack,
struct nlattr **tb, char *ifname, int status)
{
const struct net_device_ops *ops = dev->netdev_ops;
@@ -2201,7 +2202,7 @@ static int do_setlink(const struct sk_buff *skb,
}
if (xdp[IFLA_XDP_FD]) {
- err = dev_change_xdp_fd(dev,
+ err = dev_change_xdp_fd(dev, extack,
nla_get_s32(xdp[IFLA_XDP_FD]),
xdp_flags);
if (err)
@@ -2261,7 +2262,7 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
if (err < 0)
goto errout;
- err = do_setlink(skb, dev, ifm, tb, ifname, 0);
+ err = do_setlink(skb, dev, ifm, extack, tb, ifname, 0);
errout:
return err;
}
@@ -2423,6 +2424,7 @@ EXPORT_SYMBOL(rtnl_create_link);
static int rtnl_group_changelink(const struct sk_buff *skb,
struct net *net, int group,
struct ifinfomsg *ifm,
+ struct netlink_ext_ack *extack,
struct nlattr **tb)
{
struct net_device *dev, *aux;
@@ -2430,7 +2432,7 @@ static int rtnl_group_changelink(const struct sk_buff *skb,
for_each_netdev_safe(net, dev, aux) {
if (dev->group == group) {
- err = do_setlink(skb, dev, ifm, tb, NULL, 0);
+ err = do_setlink(skb, dev, ifm, extack, tb, NULL, 0);
if (err < 0)
return err;
}
@@ -2576,14 +2578,15 @@ replay:
status |= DO_SETLINK_NOTIFY;
}
- return do_setlink(skb, dev, ifm, tb, ifname, status);
+ return do_setlink(skb, dev, ifm, extack, tb, ifname,
+ status);
}
if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
if (ifm->ifi_index == 0 && tb[IFLA_GROUP])
return rtnl_group_changelink(skb, net,
nla_get_u32(tb[IFLA_GROUP]),
- ifm, tb);
+ ifm, extack, tb);
return -ENODEV;
}
generated by cgit (git 2.34.1) at 2024-07-03 10:42:56 +0000