}
parm = nla_data(pattr);
- if (!parm->nkeys) {
- NL_SET_ERR_MSG_MOD(extack, "Pedit requires keys to be passed");
- return -EINVAL;
- }
- ksize = parm->nkeys * sizeof(struct tc_pedit_key);
- if (nla_len(pattr) < sizeof(*parm) + ksize) {
- NL_SET_ERR_MSG_ATTR(extack, pattr, "Length of TCA_PEDIT_PARMS or TCA_PEDIT_PARMS_EX pedit attribute is invalid");
- return -EINVAL;
- }
-
- nparms = kzalloc(sizeof(*nparms), GFP_KERNEL);
- if (!nparms)
- return -ENOMEM;
-
- nparms->tcfp_keys_ex =
- tcf_pedit_keys_ex_parse(tb[TCA_PEDIT_KEYS_EX], parm->nkeys);
- if (IS_ERR(nparms->tcfp_keys_ex)) {
- ret = PTR_ERR(nparms->tcfp_keys_ex);
- goto out_free;
- }
index = parm->index;
err = tcf_idr_check_alloc(tn, &index, a, bind);
&act_pedit_ops, bind, flags);
if (ret) {
tcf_idr_cleanup(tn, index);
- goto out_free_ex;
+ return ret;
}
ret = ACT_P_CREATED;
} else if (err > 0) {
if (bind)
- goto out_free;
+ return 0;
if (!(flags & TCA_ACT_FLAGS_REPLACE)) {
ret = -EEXIST;
goto out_release;
}
} else {
- ret = err;
- goto out_free_ex;
+ return err;
+ }
+
+ if (!parm->nkeys) {
+ NL_SET_ERR_MSG_MOD(extack, "Pedit requires keys to be passed");
+ ret = -EINVAL;
+ goto out_release;
+ }
+ ksize = parm->nkeys * sizeof(struct tc_pedit_key);
+ if (nla_len(pattr) < sizeof(*parm) + ksize) {
+ NL_SET_ERR_MSG_ATTR(extack, pattr, "Length of TCA_PEDIT_PARMS or TCA_PEDIT_PARMS_EX pedit attribute is invalid");
+ ret = -EINVAL;
+ goto out_release;
+ }
+
+ nparms = kzalloc(sizeof(*nparms), GFP_KERNEL);
+ if (!nparms) {
+ ret = -ENOMEM;
+ goto out_release;
+ }
+
+ nparms->tcfp_keys_ex =
+ tcf_pedit_keys_ex_parse(tb[TCA_PEDIT_KEYS_EX], parm->nkeys);
+ if (IS_ERR(nparms->tcfp_keys_ex)) {
+ ret = PTR_ERR(nparms->tcfp_keys_ex);
+ goto out_free;
}
err = tcf_action_check_ctrlact(parm->action, tp, &goto_ch, extack);
if (err < 0) {
ret = err;
- goto out_release;
+ goto out_free_ex;
}
nparms->tcfp_off_max_hint = 0;
put_chain:
if (goto_ch)
tcf_chain_put_by_act(goto_ch);
-out_release:
- tcf_idr_release(*a, bind);
out_free_ex:
kfree(nparms->tcfp_keys_ex);
out_free:
kfree(nparms);
+out_release:
+ tcf_idr_release(*a, bind);
return ret;
}
return true;
}
-static int pedit_skb_hdr_offset(struct sk_buff *skb,
- enum pedit_header_type htype, int *hoffset)
+static void pedit_skb_hdr_offset(struct sk_buff *skb,
+ enum pedit_header_type htype, int *hoffset)
{
- int ret = -EINVAL;
-
+ /* 'htype' is validated in the netlink parsing */
switch (htype) {
case TCA_PEDIT_KEY_EX_HDR_TYPE_ETH:
- if (skb_mac_header_was_set(skb)) {
+ if (skb_mac_header_was_set(skb))
*hoffset = skb_mac_offset(skb);
- ret = 0;
- }
break;
case TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK:
case TCA_PEDIT_KEY_EX_HDR_TYPE_IP4:
case TCA_PEDIT_KEY_EX_HDR_TYPE_IP6:
*hoffset = skb_network_offset(skb);
- ret = 0;
break;
case TCA_PEDIT_KEY_EX_HDR_TYPE_TCP:
case TCA_PEDIT_KEY_EX_HDR_TYPE_UDP:
- if (skb_transport_header_was_set(skb)) {
+ if (skb_transport_header_was_set(skb))
*hoffset = skb_transport_offset(skb);
- ret = 0;
- }
break;
default:
- ret = -EINVAL;
break;
}
-
- return ret;
}
static int tcf_pedit_act(struct sk_buff *skb, const struct tc_action *a,
struct tcf_result *res)
{
+ enum pedit_header_type htype = TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK;
+ enum pedit_cmd cmd = TCA_PEDIT_KEY_EX_CMD_SET;
struct tcf_pedit *p = to_pedit(a);
+ struct tcf_pedit_key_ex *tkey_ex;
struct tcf_pedit_parms *parms;
+ struct tc_pedit_key *tkey;
u32 max_offset;
int i;
tcf_lastuse_update(&p->tcf_tm);
tcf_action_update_bstats(&p->common, skb);
- if (parms->tcfp_nkeys > 0) {
- struct tc_pedit_key *tkey = parms->tcfp_keys;
- struct tcf_pedit_key_ex *tkey_ex = parms->tcfp_keys_ex;
- enum pedit_header_type htype =
- TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK;
- enum pedit_cmd cmd = TCA_PEDIT_KEY_EX_CMD_SET;
-
- for (i = parms->tcfp_nkeys; i > 0; i--, tkey++) {
- u32 *ptr, hdata;
- int offset = tkey->off;
- int hoffset;
- u32 val;
- int rc;
-
- if (tkey_ex) {
- htype = tkey_ex->htype;
- cmd = tkey_ex->cmd;
-
- tkey_ex++;
- }
+ tkey = parms->tcfp_keys;
+ tkey_ex = parms->tcfp_keys_ex;
- rc = pedit_skb_hdr_offset(skb, htype, &hoffset);
- if (rc) {
- pr_info("tc action pedit bad header type specified (0x%x)\n",
- htype);
- goto bad;
- }
+ for (i = parms->tcfp_nkeys; i > 0; i--, tkey++) {
+ int offset = tkey->off;
+ int hoffset = 0;
+ u32 *ptr, hdata;
+ u32 val;
- if (tkey->offmask) {
- u8 *d, _d;
-
- if (!offset_valid(skb, hoffset + tkey->at)) {
- pr_info("tc action pedit 'at' offset %d out of bounds\n",
- hoffset + tkey->at);
- goto bad;
- }
- d = skb_header_pointer(skb, hoffset + tkey->at,
- sizeof(_d), &_d);
- if (!d)
- goto bad;
- offset += (*d & tkey->offmask) >> tkey->shift;
- }
+ if (tkey_ex) {
+ htype = tkey_ex->htype;
+ cmd = tkey_ex->cmd;
- if (offset % 4) {
- pr_info("tc action pedit offset must be on 32 bit boundaries\n");
- goto bad;
- }
+ tkey_ex++;
+ }
- if (!offset_valid(skb, hoffset + offset)) {
- pr_info("tc action pedit offset %d out of bounds\n",
- hoffset + offset);
- goto bad;
- }
+ pedit_skb_hdr_offset(skb, htype, &hoffset);
- ptr = skb_header_pointer(skb, hoffset + offset,
- sizeof(hdata), &hdata);
- if (!ptr)
- goto bad;
- /* just do it, baby */
- switch (cmd) {
- case TCA_PEDIT_KEY_EX_CMD_SET:
- val = tkey->val;
- break;
- case TCA_PEDIT_KEY_EX_CMD_ADD:
- val = (*ptr + tkey->val) & ~tkey->mask;
- break;
- default:
- pr_info("tc action pedit bad command (%d)\n",
- cmd);
+ if (tkey->offmask) {
+ u8 *d, _d;
+
+ if (!offset_valid(skb, hoffset + tkey->at)) {
+ pr_info("tc action pedit 'at' offset %d out of bounds\n",
+ hoffset + tkey->at);
goto bad;
}
+ d = skb_header_pointer(skb, hoffset + tkey->at,
+ sizeof(_d), &_d);
+ if (!d)
+ goto bad;
+ offset += (*d & tkey->offmask) >> tkey->shift;
+ }
- *ptr = ((*ptr & tkey->mask) ^ val);
- if (ptr == &hdata)
- skb_store_bits(skb, hoffset + offset, ptr, 4);
+ if (offset % 4) {
+ pr_info("tc action pedit offset must be on 32 bit boundaries\n");
+ goto bad;
}
- goto done;
- } else {
- WARN(1, "pedit BUG: index %d\n", p->tcf_index);
+ if (!offset_valid(skb, hoffset + offset)) {
+ pr_info("tc action pedit offset %d out of bounds\n",
+ hoffset + offset);
+ goto bad;
+ }
+
+ ptr = skb_header_pointer(skb, hoffset + offset,
+ sizeof(hdata), &hdata);
+ if (!ptr)
+ goto bad;
+ /* just do it, baby */
+ switch (cmd) {
+ case TCA_PEDIT_KEY_EX_CMD_SET:
+ val = tkey->val;
+ break;
+ case TCA_PEDIT_KEY_EX_CMD_ADD:
+ val = (*ptr + tkey->val) & ~tkey->mask;
+ break;
+ default:
+ pr_info("tc action pedit bad command (%d)\n",
+ cmd);
+ goto bad;
+ }
+
+ *ptr = ((*ptr & tkey->mask) ^ val);
+ if (ptr == &hdata)
+ skb_store_bits(skb, hoffset + offset, ptr, 4);
}
+ goto done;
+
bad:
spin_lock(&p->tcf_lock);
p->tcf_qstats.overlimits++;
projects / platform / kernel / linux-starfive.git / blobdiff