Merge tag 'net-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netstable

Pull networking fixes from Jakub Kicinski:
 "Including fixes from Bluetooth, IPSec and Netfilter.

  Current release - fix to a fix:

   - netfilter: ipset: remove need to allocate memory on delete operations

  Current release - regressions:

   - macb: drop CONFIG_OF #if block, fix build

  Previous releases - always broken:

   - stream of fixes for SCTP continues

   - inet: frags: strip GSO state from fragments before reassembly

   - virtio-net: ensure that TCP packets don't overflow gso_segs

   - tcp-ao: fix use-after-free of current_key on reconnect to another
     peer

   - page_pool: remove zone/policy GFP flags when allocating XArray
     entries

   - Bluetooth: L2CAP: reject accept queue add unless BT_LISTEN

   - tls: device: fix out-of-bounds write in tls_append_frag()

   - eth: bnxt:
      - ring the doorbell when SW USO exits early, avoid packets stuck
        in Tx
      - gate TPH enablement behind BNXT_SUPPORTS_QUEUE_API check, avoid
        users of older NICs seeing non-actionable warning messages

   - eth: qede: fix NULL pointer dereference in TPA fragment processing"

* tag 'net-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (216 commits)
  inet: frags: strip GSO state from fragments before reassembly
  net/sched: sch_htb: limit htb_classify inner-class filter hops
  selftests/net: packetdrill: add tcp_urg_ptr_retransmit
  tcp: fix corruption of urgent data on multi-segment retransmit
  usb: atm: usbatm: fix invalid ci_range initialization
  net: fec: only stop PTP if it was initialized
  slip: remove slip_hangup() to fix use-after-free in slip_receive_buf()
  net: bridge: mcast: fix use-after-free of a master VLAN's multicast context
  net/sched: bound qdisc_pkt_len to prevent qdisc soft lockup
  net: dsa: mxl862xx: enable assisted learning on CPU port
  net: stmmac: restore NET_IP_ALIGN in the RX DMA offset
  net: stmmac: drop gso_enabled_types and rely on netdev features
  net: stmmac: selftests: Don't test flow control for small rx fifos
  net: stmmac: selftests: Account for the UC filter list for filtering tests
  net: stmmac: dwxgmac: Account for the primary MAC address for UC filtering
  net: stmmac: dwmac4: Account for the primary MAC address for UC filtering
  net: stmmac: dwmac1000: Account for the primary MAC address for UC filtering
  net: stmmac: selftests: Check multiple MMC counters
  selftests: net: Fix slow configurations in big_tcp_tunnels.sh
  selftests: net: Lower threshold with csum offload off in big_tcp_tunnels.sh
  ...

1 files changed, 27 insertions, 3 deletions

diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
index 7855ee09c4b6..33475b180ea6 100644
--- a/net/xdp/xsk.c
+++ b/net/xdp/xsk.c
@@ -298,9 +298,11 @@ static int __xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len)
 	u32 frame_size = __xsk_pool_get_rx_frame_size(xs->pool);
 	void *copy_from = xsk_copy_xdp_start(xdp), *copy_to;
 	u32 from_len, meta_len, rem, num_desc;
-	struct xdp_buff_xsk *xskb;
+	struct xdp_buff_xsk *xskb, *tmp;
 	struct xdp_buff *xsk_xdp;
+	LIST_HEAD(xsk_buffs);
 	skb_frag_t *frag;
+	u32 i;
 
 	from_len = xdp->data_end - copy_from;
 	meta_len = xdp->data - copy_from;
@@ -343,23 +345,45 @@ static int __xsk_rcv(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len)
 		frag =  &sinfo->frags[0];
 	}
 
+	for (i = 0; i < num_desc; i++) {
+		xsk_xdp = xsk_buff_alloc(xs->pool);
+		if (!xsk_xdp)
+			goto err_alloc;
+
+		xskb = container_of(xsk_xdp, struct xdp_buff_xsk, xdp);
+		if (unlikely(!list_empty(&xskb->list_node)))
+			goto err_alloc;
+
+		list_add_tail(&xskb->list_node, &xsk_buffs);
+	}
+
 	do {
 		u32 to_len = frame_size + meta_len;
 		u32 copied;
 
-		xsk_xdp = xsk_buff_alloc(xs->pool);
+		xskb = list_first_entry(&xsk_buffs, struct xdp_buff_xsk,
+					list_node);
+		list_del_init(&xskb->list_node);
+		xsk_xdp = &xskb->xdp;
 		copy_to = xsk_xdp->data - meta_len;
 
 		copied = xsk_copy_xdp(copy_to, &copy_from, to_len, &from_len, &frag, rem);
 		rem -= copied;
 
-		xskb = container_of(xsk_xdp, struct xdp_buff_xsk, xdp);
 		__xsk_rcv_zc_safe(xs, xskb, copied - meta_len,
 				  rem ? XDP_PKT_CONTD : 0);
 		meta_len = 0;
 	} while (rem);
 
 	return 0;
+
+err_alloc:
+	list_for_each_entry_safe(xskb, tmp, &xsk_buffs, list_node) {
+		list_del_init(&xskb->list_node);
+		xsk_buff_free(&xskb->xdp);
+	}
+	xs->rx_dropped++;
+	return -ENOMEM;
 }
 
 static bool xsk_tx_writeable(struct xdp_sock *xs)