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networking: make skb_put & friends return void pointers

Browse source 
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:

    @@
    expression SKB, LEN;
    typedef u8;
    identifier fn = { skb_put, __skb_put };
    @@
    - *(fn(SKB, LEN))
    + *(u8 *)fn(SKB, LEN)

    @@
    expression E, SKB, LEN;
    identifier fn = { skb_put, __skb_put };
    type T;
    @@
    - E = ((T *)(fn(SKB, LEN)))
    + E = fn(SKB, LEN)

which actually doesn't cover pskb_put since there are only three
users overall.

A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Johannes Berg 2017-06-16 14:29:21 +02:00 • committed by David S. Miller
commit 4df864c1d9
145 changed files with 486 additions and 547 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/infiniband/core/addr.c
View file

@ -179,8 +179,7 @@ static int ib_nl_ip_send_msg(struct rdma_dev_addr *dev_addr,
}
/* Construct the family header first */
header = (struct rdma_ls_ip_resolve_header *)
skb_put(skb, NLMSG_ALIGN(sizeof(*header)));
header = skb_put(skb, NLMSG_ALIGN(sizeof(*header)));
header->ifindex = dev_addr->bound_dev_if;
nla_put(skb, attrtype, size, daddr);

3
drivers/infiniband/core/sa_query.c
View file

@ -759,8 +759,7 @@ static void ib_nl_set_path_rec_attrs(struct sk_buff *skb,
query->mad_buf->context[1] = NULL;
/* Construct the family header first */
header = (struct rdma_ls_resolve_header *)
skb_put(skb, NLMSG_ALIGN(sizeof(*header)));
header = skb_put(skb, NLMSG_ALIGN(sizeof(*header)));
memcpy(header->device_name, query->port->agent->device->name,
LS_DEVICE_NAME_MAX);
header->port_num = query->port->port_num;

2
drivers/infiniband/hw/cxgb3/cxio_hal.c
View file

@ -835,7 +835,7 @@ int cxio_rdma_init(struct cxio_rdev *rdev_p, struct t3_rdma_init_attr *attr)
if (!skb)
return -ENOMEM;
pr_debug("%s rdev_p %p\n", __func__, rdev_p);
wqe = (struct t3_rdma_init_wr *) __skb_put(skb, sizeof(*wqe));
wqe = __skb_put(skb, sizeof(*wqe));
wqe->wrh.op_seop_flags = cpu_to_be32(V_FW_RIWR_OP(T3_WR_INIT));
wqe->wrh.gen_tid_len = cpu_to_be32(V_FW_RIWR_TID(attr->tid) |
V_FW_RIWR_LEN(sizeof(*wqe) >> 3));

22
drivers/infiniband/hw/cxgb3/iwch_cm.c
View file

@ -175,7 +175,7 @@ static void release_tid(struct t3cdev *tdev, u32 hwtid, struct sk_buff *skb)
skb = get_skb(skb, sizeof *req, GFP_KERNEL);
if (!skb)
return;
req = (struct cpl_tid_release *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, hwtid));
skb->priority = CPL_PRIORITY_SETUP;
@ -190,7 +190,7 @@ int iwch_quiesce_tid(struct iwch_ep *ep)
if (!skb)
return -ENOMEM;
req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid));
@ -211,7 +211,7 @@ int iwch_resume_tid(struct iwch_ep *ep)
if (!skb)
return -ENOMEM;
req = (struct cpl_set_tcb_field *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, ep->hwtid));
@ -398,7 +398,7 @@ static int send_halfclose(struct iwch_ep *ep, gfp_t gfp)
}
skb->priority = CPL_PRIORITY_DATA;
set_arp_failure_handler(skb, arp_failure_discard);
req = (struct cpl_close_con_req *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_CLOSE_CON));
req->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_CON_REQ, ep->hwtid));
@ -455,7 +455,7 @@ static int send_connect(struct iwch_ep *ep)
skb->priority = CPL_PRIORITY_SETUP;
set_arp_failure_handler(skb, act_open_req_arp_failure);
req = (struct cpl_act_open_req *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, ep->atid));
req->local_port = ep->com.local_addr.sin_port;
@ -546,7 +546,7 @@ static int send_mpa_reject(struct iwch_ep *ep, const void *pdata, u8 plen)
return -ENOMEM;
}
skb_reserve(skb, sizeof(*req));
mpa = (struct mpa_message *) skb_put(skb, mpalen);
mpa = skb_put(skb, mpalen);
memset(mpa, 0, sizeof(*mpa));
memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
mpa->flags = MPA_REJECT;
@ -596,7 +596,7 @@ static int send_mpa_reply(struct iwch_ep *ep, const void *pdata, u8 plen)
}
skb->priority = CPL_PRIORITY_DATA;
skb_reserve(skb, sizeof(*req));
mpa = (struct mpa_message *) skb_put(skb, mpalen);
mpa = skb_put(skb, mpalen);
memset(mpa, 0, sizeof(*mpa));
memcpy(mpa->key, MPA_KEY_REP, sizeof(mpa->key));
mpa->flags = (ep->mpa_attr.crc_enabled ? MPA_CRC : 0) |
@ -800,7 +800,7 @@ static int update_rx_credits(struct iwch_ep *ep, u32 credits)
return 0;
}
req = (struct cpl_rx_data_ack *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_RX_DATA_ACK, ep->hwtid));
req->credit_dack = htonl(V_RX_CREDITS(credits) | V_RX_FORCE_ACK(1));
@ -1205,7 +1205,7 @@ static int listen_start(struct iwch_listen_ep *ep)
return -ENOMEM;
}
req = (struct cpl_pass_open_req *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, ep->stid));
req->local_port = ep->com.local_addr.sin_port;
@ -1246,7 +1246,7 @@ static int listen_stop(struct iwch_listen_ep *ep)
pr_err("%s - failed to alloc skb\n", __func__);
return -ENOMEM;
}
req = (struct cpl_close_listserv_req *) skb_put(skb, sizeof(*req));
req = skb_put(skb, sizeof(*req));
req->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_FORWARD));
req->cpu_idx = 0;
OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, ep->stid));
@ -1614,7 +1614,7 @@ static int peer_abort(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
goto out;
}
rpl_skb->priority = CPL_PRIORITY_DATA;
rpl = (struct cpl_abort_rpl *) skb_put(rpl_skb, sizeof(*rpl));
rpl = skb_put(rpl_skb, sizeof(*rpl));
rpl->wr.wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_HOST_ABORT_CON_RPL));
rpl->wr.wr_lo = htonl(V_WR_TID(ep->hwtid));
OPCODE_TID(rpl) = htonl(MK_OPCODE_TID(CPL_ABORT_RPL, ep->hwtid));

22
drivers/infiniband/hw/cxgb4/cm.c
View file

@ -597,7 +597,7 @@ static int send_flowc(struct c4iw_ep *ep)
else
nparams = 9;
flowc = (struct fw_flowc_wr *)__skb_put(skb, FLOWC_LEN);
flowc = __skb_put(skb, FLOWC_LEN);
flowc->op_to_nparams = cpu_to_be32(FW_WR_OP_V(FW_FLOWC_WR) |
FW_FLOWC_WR_NPARAMS_V(nparams));
@ -787,18 +787,16 @@ static int send_connect(struct c4iw_ep *ep)
if (ep->com.remote_addr.ss_family == AF_INET) {
switch (CHELSIO_CHIP_VERSION(adapter_type)) {
case CHELSIO_T4:
req = (struct cpl_act_open_req *)skb_put(skb, wrlen);
req = skb_put(skb, wrlen);
INIT_TP_WR(req, 0);
break;
case CHELSIO_T5:
t5req = (struct cpl_t5_act_open_req *)skb_put(skb,
wrlen);
t5req = skb_put(skb, wrlen);
INIT_TP_WR(t5req, 0);
req = (struct cpl_act_open_req *)t5req;
break;
case CHELSIO_T6:
t6req = (struct cpl_t6_act_open_req *)skb_put(skb,
wrlen);
t6req = skb_put(skb, wrlen);
INIT_TP_WR(t6req, 0);
req = (struct cpl_act_open_req *)t6req;
t5req = (struct cpl_t5_act_open_req *)t6req;
@ -839,18 +837,16 @@ static int send_connect(struct c4iw_ep *ep)
} else {
switch (CHELSIO_CHIP_VERSION(adapter_type)) {
case CHELSIO_T4:
req6 = (struct cpl_act_open_req6 *)skb_put(skb, wrlen);
req6 = skb_put(skb, wrlen);
INIT_TP_WR(req6, 0);
break;
case CHELSIO_T5:
t5req6 = (struct cpl_t5_act_open_req6 *)skb_put(skb,
wrlen);
t5req6 = skb_put(skb, wrlen);
INIT_TP_WR(t5req6, 0);
req6 = (struct cpl_act_open_req6 *)t5req6;
break;
case CHELSIO_T6:
t6req6 = (struct cpl_t6_act_open_req6 *)skb_put(skb,
wrlen);
t6req6 = skb_put(skb, wrlen);
INIT_TP_WR(t6req6, 0);
req6 = (struct cpl_act_open_req6 *)t6req6;
t5req6 = (struct cpl_t5_act_open_req6 *)t6req6;
@ -1904,7 +1900,7 @@ static int send_fw_act_open_req(struct c4iw_ep *ep, unsigned int atid)
int win;
skb = get_skb(NULL, sizeof(*req), GFP_KERNEL);
req = (struct fw_ofld_connection_wr *)__skb_put(skb, sizeof(*req));
req = __skb_put(skb, sizeof(*req));
memset(req, 0, sizeof(*req));
req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR));
req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));
@ -3807,7 +3803,7 @@ static void send_fw_pass_open_req(struct c4iw_dev *dev, struct sk_buff *skb,
req_skb = alloc_skb(sizeof(struct fw_ofld_connection_wr), GFP_KERNEL);
if (!req_skb)
return;
req = (struct fw_ofld_connection_wr *)__skb_put(req_skb, sizeof(*req));
req = __skb_put(req_skb, sizeof(*req));
memset(req, 0, sizeof(*req));
req->op_compl = htonl(WR_OP_V(FW_OFLD_CONNECTION_WR) | FW_WR_COMPL_F);
req->len16_pkd = htonl(FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*req), 16)));

4
drivers/infiniband/hw/cxgb4/cq.c
View file

@ -44,7 +44,7 @@ static int destroy_cq(struct c4iw_rdev *rdev, struct t4_cq *cq,
wr_len = sizeof *res_wr + sizeof *res;
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
res_wr = (struct fw_ri_res_wr *)__skb_put(skb, wr_len);
res_wr = __skb_put(skb, wr_len);
memset(res_wr, 0, wr_len);
res_wr->op_nres = cpu_to_be32(
FW_WR_OP_V(FW_RI_RES_WR) |
@ -114,7 +114,7 @@ static int create_cq(struct c4iw_rdev *rdev, struct t4_cq *cq,
}
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
res_wr = (struct fw_ri_res_wr *)__skb_put(skb, wr_len);
res_wr = __skb_put(skb, wr_len);
memset(res_wr, 0, wr_len);
res_wr->op_nres = cpu_to_be32(
FW_WR_OP_V(FW_RI_RES_WR) |

4
drivers/infiniband/hw/cxgb4/mem.c
View file

@ -81,7 +81,7 @@ static int _c4iw_write_mem_dma_aligned(struct c4iw_rdev *rdev, u32 addr,
}
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
req = (struct ulp_mem_io *)__skb_put(skb, wr_len);
req = __skb_put(skb, wr_len);
memset(req, 0, wr_len);
INIT_ULPTX_WR(req, wr_len, 0, 0);
req->wr.wr_hi = cpu_to_be32(FW_WR_OP_V(FW_ULPTX_WR) |
@ -142,7 +142,7 @@ static int _c4iw_write_mem_inline(struct c4iw_rdev *rdev, u32 addr, u32 len,
}
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
req = (struct ulp_mem_io *)__skb_put(skb, wr_len);
req = __skb_put(skb, wr_len);
memset(req, 0, wr_len);
INIT_ULPTX_WR(req, wr_len, 0, 0);

8
drivers/infiniband/hw/cxgb4/qp.c
View file

@ -293,7 +293,7 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq,
}
set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0);
res_wr = (struct fw_ri_res_wr *)__skb_put(skb, wr_len);
res_wr = __skb_put(skb, wr_len);
memset(res_wr, 0, wr_len);
res_wr->op_nres = cpu_to_be32(
FW_WR_OP_V(FW_RI_RES_WR) |
@ -1228,7 +1228,7 @@ static void post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe,
set_wr_txq(skb, CPL_PRIORITY_DATA, qhp->ep->txq_idx);
wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe));
wqe = __skb_put(skb, sizeof(*wqe));
memset(wqe, 0, sizeof *wqe);
wqe->op_compl = cpu_to_be32(FW_WR_OP_V(FW_RI_INIT_WR));
wqe->flowid_len16 = cpu_to_be32(
@ -1350,7 +1350,7 @@ static int rdma_fini(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx);
wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe));
wqe = __skb_put(skb, sizeof(*wqe));
memset(wqe, 0, sizeof *wqe);
wqe->op_compl = cpu_to_be32(
FW_WR_OP_V(FW_RI_INIT_WR) |
@ -1419,7 +1419,7 @@ static int rdma_init(struct c4iw_dev *rhp, struct c4iw_qp *qhp)
}
set_wr_txq(skb, CPL_PRIORITY_DATA, qhp->ep->txq_idx);
wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe));
wqe = __skb_put(skb, sizeof(*wqe));
memset(wqe, 0, sizeof *wqe);
wqe->op_compl = cpu_to_be32(
FW_WR_OP_V(FW_RI_INIT_WR) |