Commit d34d0bdb authored by Zhu Yanjun's avatar Zhu Yanjun Committed by Leon Romanovsky
Browse files

RDMA/rxe: Replace netdev dev addr with raw_gid 



Because TUN device does not have dev_addr, but a gid in rdma is needed,
as such, a raw_gid is generated to act as the gid. The similar commit is
in SIW. This commit learns from the similar commit bad5b6e3
("RDMA/siw: Fabricate a GID on tun and loopback devices") in SIW.

Signed-off-by: default avatarZhu Yanjun <yanjun.zhu@linux.dev>
Link: https://patch.msgid.link/20250119172831.3123110-2-yanjun.zhu@linux.dev


Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 2014c95a

drivers/infiniband/sw/rxe/rxe.c

+13 −2
Original line number Diff line number Diff line
@@ -78,8 +78,19 @@ static void rxe_init_device_param(struct rxe_dev *rxe) 
	if (!ndev)

		return;



	if (ndev->addr_len) {

		memcpy(rxe->raw_gid, ndev->dev_addr,

			min_t(unsigned int, ndev->addr_len, ETH_ALEN));

	} else {

		/*

		 * This device does not have a HW address, but

		 * connection mangagement requires a unique gid.

		 */

		eth_random_addr(rxe->raw_gid);

	}



	addrconf_addr_eui48((unsigned char *)&rxe->attr.sys_image_guid,

			ndev->dev_addr);

			rxe->raw_gid);



	dev_put(ndev);
@@ -125,7 +136,7 @@ static void rxe_init_ports(struct rxe_dev *rxe) 
	if (!ndev)

		return;

	addrconf_addr_eui48((unsigned char *)&port->port_guid,

			    ndev->dev_addr);

			    rxe->raw_gid);

	dev_put(ndev);

	spin_lock_init(&port->port_lock);

}

drivers/infiniband/sw/rxe/rxe_verbs.c

+1 −1
Original line number Diff line number Diff line
@@ -1523,7 +1523,7 @@ int rxe_register_device(struct rxe_dev *rxe, const char *ibdev_name, 
	dev->num_comp_vectors = num_possible_cpus();

	dev->local_dma_lkey = 0;

	addrconf_addr_eui48((unsigned char *)&dev->node_guid,

			    ndev->dev_addr);

			    rxe->raw_gid);



	dev->uverbs_cmd_mask |= BIT_ULL(IB_USER_VERBS_CMD_POST_SEND) |

				BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ);

drivers/infiniband/sw/rxe/rxe_verbs.h

+3 −1
Original line number Diff line number Diff line
@@ -378,6 +378,8 @@ struct rxe_dev { 
	int			max_inline_data;

	struct mutex		usdev_lock;



	char			raw_gid[ETH_ALEN];



	struct rxe_pool		uc_pool;

	struct rxe_pool		pd_pool;

	struct rxe_pool		ah_pool;