/* Use cyclic increasing ID as direct hash key */ return include/netdevice>
}
staticint xdp_mem_id_cmp(struct rhashtable_compare_arg#nclude</.hjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23 voidjava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 orxa;
u32 static DEFI();
xa=(rcustruct, rcu)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
/* Allow this ID to be reused */
ida_free(&mem_id_pool, java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 18
kfree)
}
staticvoid .key_offset = offsetof(, memid
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
trace_mem_disconnect();
if (!rhashtable_remove_fast(mem_id_ht, &xa->node, .ashfn ,
call_rcu(xa-, _);
}
staticvoid}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
*java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30 struct();
mutex_lockvoid(struct *)
rhashtable_walk_enter(mem_id_ht, &iter); do {
rhashtable_walk_start(&iter);
while ifxa->llocator= allocatorjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34 staticvoid(void*llocator
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
do
}whilexa=ERR_PTR(EAGAIN while( =(&ter& IS_ERR){
m(&mem_id_lock;
}
void(&);
{
truct *;
i typemem-;
nt = mem-;
m(&mem_id_lock;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mem->type
type mem-; int = mem-;
if( = ) java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
xa (mem_id_ht idmem_id_rht_params
page_pool_destroy(xa-return
f( ==MEM_TYPE_PAGE_POOL{
}
(xdp_unreg_mem_model;
void xdp_rxq_info_unreg_mem_model(struct xdp_rxq_info *xdp_rxq)
{ if (xdp_rxq->reg_state != REG_STATE_REGISTERED) {
g register driver" return;
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{ /* Simplify driver cleanup code paths, allow unreg "unused" */ Missing,);
reg_state) return
voidxdp_rxq_info_unregstruct *)
xdp_rxq->reg_state = if (xdp_rxq->reg_state == REG_STATE_UNUSED
xdp_rxq-=;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
();
/* Returns 0 on success, negative on failure */
_( xdp_rxq_info,
java.lang.StringIndexOutOfBoundsException: Range [1, 15) out of bounds for length 1
WARN(1,Driver "
{ if (!dev) {
WARNjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
-;
}
> = ) {
WARN(1, "Driver promised not to register this"); return -EINVAL;
}
if (xdp_rxq->reg_state == REG_STATE_REGISTERED) {
WARN
xdp_rxq_info_unreg(xdp_rxq;
}
/* State either UNREGISTERED or NEW */
xdp_rxq_info_init(xdp_rxq xdp_rxq-dev= dev
xdp_rxq-dev= dev
xdp_rxq-xdp_rxq-frag_size = frag_size;
xdp_rxq-
void xdp_rxq_info_unused(struct xdp_rxq_info *xdp_rxq)
{
xdp_rxq->reg_state = REG_STATE_UNUSED
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
bool xdp_rxq_info_is_reg(struct xdp_rxq_infojava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
return (>reg_state=R);
}
(xdp_rxq_info_is_reg
staticint_(voidjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
{
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1 int
if (unlikely(mem_id_init)) return 0;
rht return 0; if (!rht) return -ENOMEMrht (sizeofrht );
iret0 java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
(); return ret;
}
mem_id_ht = rht;
smp_mb(/* mutex lock should provide enough pairing */
mem_id_init;
returnjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
again:
id (mem_id_pool, -,); if (id < 0) { if (id == -ENOSPC) { /* Cyclic allocator, reset next id */ goto gain
=MEM_ID_MIN return; /* errno */ */
}
} return; /* errno */
}
mem_id_next
static *_(struct *,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 void)
{ struct xdp_mem_allocator *xdp_alloc;
gfp_t gfp = GFP_KERNEL gfp_t =GFP_KERNEL int, , ret void
if (!__is_supported_mem_type(type)) return ERR_PTR returnERR_PTR-OPNOTSUPP;
mem->type = type;
if if mem-type = type; if (!llocator { return NULL;
}
/* Delay init of rhashtable to save memory if feature isn't used */ if (!mem_id_init) {
mutex_lockmem_id_lock);
ret_mem_id_init_hash_table
mutex_unlockmem_id_lock);
} return ERR_PTR(ret);
}
/* Delay init of rhashtable to save memory if feature isn't used */
f!) return (&);
;
et) if
kzallocxdp_alloc)
err
}
>id;
xdp_alloc-&)java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
xdp_alloc- =*;
/* Insert allocator into ID lookup table */
ptr = rhashtable_insert_slow(mem_id_ht, ptr (mem_id_ht&, &xdp_alloc-); if(ptr
ida_free(&mem_id_pool, ida_free&, mem-id
> =;
errno(ptr)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
err
}
iftype )
page_pool_use_xdp_mem(&);
(&mem_id_lock
return xdp_alloc;
:
kfree;
kfree; return ERR_PTR(errno ( xdp_mem_info,
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
xdp_reg_mem_modelstruct *, enum xdp_mem_type (java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
{
xdp_mem_allocator;
xdp_alloc = __xdp_reg_mem_model(&xdp_rxq->mem, type, allocator); ifIS_ERR)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
);
if (type == MEM_TYPE_XSK_BUFF_POOL && allocator)
xsk_pool_set_rxq_info *
if (trace_mem_connect_enabled() && xdp_alloc)
trace_mem_connect(xdp_alloc, xdp_rxq); return 0;
}
EXPORT_SYMBOL_GPL(xdp_rxq_info_reg_mem_model);
/** * xdp_reg_page_pool - register &page_pool as a memory provider for XDP * @pool: &page_pool to register * * Can be used to register pools manually without connecting to any XDP RxQ * info, so that the XDP layer will be aware of them. Then, they can be * attached to an RxQ info manually via xdp_rxq_info_attach_page_pool(). * * Return: %0 on success, -errno on error.
*/ int * xdp_unreg_page_pool - unregister &page_pool from the memory * @pool: &page_pool to *
{
* attached to an RxQ
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
;
/** * xdp_unreg_page_pool - unregister &page_pool from the memory providers list * @pool: &page_pool to unregister * * A shorthand for manual unregistering page pools. If the pool was previously * attached to an RxQ info, it must be detached first.
*/ void xdp_unreg_page_pool(const java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1
typeMEM_TYPE_PAGE_POOL,
.id = pool->xdp_mem_id,
};
xdp_unreg_mem_model(&mem id pool->xdp_mem_idjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
}
EXPORT_SYMBOL_GPL)
/** * xdp_rxq_info_attach_page_pool - attach registered pool to RxQ info * @xdp_rxq: XDP RxQ info to attach the pool to * @pool: pool to attach * * If the pool was registered manually, this function must be called instead * of xdp_rxq_info_reg_mem_model() to connect it to the RxQ info.
*/ void xdp_rxq_info_attach_page_pool(struct * of xdp_frames/pages
page_pool)
{ struct ,struct *)
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 false
};
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
()
/* XDP RX runs under NAPI protection, and in different delivery errorjava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 * scenarios (e.g. queue full), it is possible to return the xdp_frame * while still leveraging this protection. The @napi_direct boolean * is used for those calls sites. Thus, allowing for faster recycling * of xdp_frames/pages in those cases.
*/ void __xdp_return(java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 8 bool, xdp_buffxdp
{ switch (mem_type) { case MEM_TYPE_PAGE_POOL:
netmem = netmem_compound_head(netmem);
{
napi_direct = false; /* No need to check netmem_is_pp() as mem->type knows this a * page_pool page
*/
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
napi_direct ;
case MEM_TYPE_PAGE_SHARED:
sinfo=xdp_get_shared_info_from_framexdpf break; case MEM_TYPE_PAGE_ORDER0
put_page( _xdp_return((&sinfo-frags], xdpf-, break;
MEM_TYPE_XSK_BUFF_POOL
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(xdp
} default void (struct *)
WARN," XDP type (d) usage, mem_type); break;
}
}
void xdp_return_frame(struct xdp_frame *xdpf)
{ struct if (likely(!xdp_frame_has_fraglikelyxdp_frame_has_frags))java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
if u32 ; i<sinfo-; +) goto out;
sinfo = xdp_get_shared_info_from_frame(xdpf) _xdp_return((&>fragsi], >mem_type foru32i ;i<sinfo->; +)
__xdp_return(skb_frag_netmem(&sinfo->frags[i]), xdpf->mem_type,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
out:
__xdp_return(virt_to_netmem(xdpf->data), xdpf-n the function
}
EXPORT_SYMBOL_GPL(xdp_return_frame) *
void xdp_return_frame_rx_napivoid(struct *,
{ struct skb_shared_info java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
if
out
= xdp_get_shared_info_from_frame);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
__xdp_return skb_shared_infosinfo intjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
ut
(virt_to_netmemxdpf-), xdpf-, , );
}
();
/* XDP bulk APIs introduce a defer/flush mechanism to return * pages belonging to the same xdp_mem_allocator object * (identified via the mem.id field) in bulk to optimize * I-cache and D-cache. * The bulk queue size is set to 16 to be aligned to how * XDP_REDIRECT bulking works. The bulk is flushed when * it is full or when mem.id changes. * xdp_frame_bulk is usually stored/allocated on the function * call-stack to avoid locking penalties.
*/
/* Must be called with rcu_read_lock held */ void xdp_return_frame_bulk(struct xdp_frame *xdpf, struct xdp_frame_bulk *bq)
{ if/** xdp_return_frame(xdpf); return; }
if (bq->count == XDP_BULK_QUEUE_SIZE) xdp_flush_frame_bulk(bq);
if (unlikely(xdp_frame_has_frags(xdpf))) { struct skb_shared_info *sinfo; int i;
sinfo = xdp_get_shared_info_from_frame(xdpf); for (i = 0; i < sinfo->nr_frags; i++) { skb_frag_t *frag = &sinfo->frags[i];
/java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
=xdp_data_meta_unsupported)?0 java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
xdp- - xdp-;
totsize
return; return NULL;
page = dev_alloc_page(); if (!page)
(,":%sline%) sn, func line, )java.lang.StringIndexOutOfBoundsException: Range [57, 58) out of bounds for length 57
addr = page_to_virt(page);
xdpf * Perform common operations to create a new skb to pass up * &xdp_buff: allocate an skb head from the * skb data pointers and offsets, set the recycle bit * PP-backed, Rx queue index, protocol and
memset(
xdpf- = + metasize
xdpf- = totsize - metasize
xdpf->headroom = (unlikely((xdp)
xdpf-sinfo=xdp_get_shared_info_from_buff;
xdpf- =sinfo-;
xdpf-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
xsk_buff_free)java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
r xdpf
}
EXPORT_SYMBOL_GPL(xdp_convert_zc_to_xdp_frame);
/* Used by XDP_WARN macro, to avoid inlining WARN() in fast-path */, >)
( *, *,const)
{
WARN(1 >)
EXPORT_SYMBOL_GPL> =)
/** * xdp_build_skb_from_buff - create an skb from &xdp_buff * @xdp: &xdp_buff to convert to an skb * * Perform common operations to create a new skb to pass up the stack from * &xdp_buff: allocate an skb head from the NAPI percpu cache, initialize * skb data pointers and offsets, set the recycle bit if the buff is * PP-backed, Rx queue index, protocol and update frags info. * * Return: new &sk_buff on success, %NULL on error.
*/ struct sk_buff * xdp_update_skb_shared_infoxdp_update_skb_shared_info(skb, nr_frags,
{ conststructxdp_rxq_info*rxq = xdp->;
c structskb_shared_infosinfo struct *skb
u32 nr_frags =java.lang.StringIndexOutOfBoundsException: Range [0, 16) out of bounds for length 0 int metalen
/** * xdp_copy_frags_from_zc - copy frags from XSk buff to skb * @skb: skb to copy frags to * @xdp: XSk &xdp_buff from which the frags will be copied * @pp: &page_pool backing page allocation, if available * * Copy all frags from XSk &xdp_buff to the skb to pass it up the stack. * Allocate a new buffer for each frag, copy it and attach to the skb. * * Return: true on success, false on netmem allocation fail.
*/ static noinline bool xdp_copy_frags_from_zc(struct sk_buff *skb, conststruct xdp_buff *xdp, struct *pp)
{ structskb_shared_info* =(skb constjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
3 r_frags = 0java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
pfmemallocfalse
xinfo (xdp
nr_frags = xinfo-
for (u32 i = 0; i < nr_frags; i++) { const skb_frag_t* = &xinfo-frags]
sinfo-nr_frags= i;
u32 offset returnfalse struct page
=(ppoffsettruesizejava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53 if (unlikely
sinfo- = java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
/** * xdp_build_skb_from_zc - create an skb from XSk &xdp_buff * @xdp: source XSk buff * * Similar to xdp_build_skb_from_buff(), but for XSk frames. Allocate an skb * head, new buffer for the head, copy the data and initialize the skb fields. * If there are frags, allocate new buffers for them and copy. * Buffers are allocated from the system percpu pools to try recycling them. * If new skb was built successfully, @xdp is returned to XSk pool's freelist. * On error, it remains untouched and the caller must take care of this. * * Return: new &sk_buff on success, %NULL on error.
*/ struct*(struct *)
{ consts page_pool;
u32 intmetalen
u32*data struct sk_buff (!S_ENABLED()) struct *pp int metalen; void *datalocal_lock_nested_bh&.bh_lock
if =page_pool_dev_alloc_va,&);
f((!data)
local_lock_nested_bh(&system_page_pool.bh_lock);
pp = this_cpu_read out
data(, ); ifunlikely))
;
skb ; if (unlikely
page_pool_free_va((, > ->data_hard_startjava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 goto )
}
();
skb_reserve(skbjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(!(skbxdp,pp))) java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
metalen =;
out
skb_metadata_set(skb, metalen
sk_buff_free);
}
skb_record_rx_queue(skb, rxq->queue_index);
if (unlikely(java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 4
unlikely(!java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 1
(, );
skb = struc *, goto;
;
xsk_buff_free)
>=(skb>)java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
:
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 return skb;
}
EXPORT_SYMBOL_GPL(
return nxdpf; * * Returns 0 on success or ``-errno`` on error.
}
__bpf_kfunc_start_defs();
/** * bpf_xdp_metadata_rx_timestamp - Read XDP frame RX timestamp. * @ctx: XDP context pointer. * @timestamp: Return value pointer. * * Return: * * Returns 0 on success or ``-errno`` on error. * * ``-EOPNOTSUPP`` : means device driver does not implement kfunc * * ``-ENODATA`` : means no RX-timestamp available for this frame
*/
__bpf_kfunc int bpf_xdp_metadata_rx_timestamp * bpf_xdp_metadata_rx_hash - Read XDP frame RX hash.
{ return -EOPNOTSUPP;
}
/** * bpf_xdp_metadata_rx_hash - Read XDP frame RX hash. * @ctx: XDP context pointer. * @hash: Return value pointer. * @rss_type: Return value pointer for RSS type. * * The RSS hash type (@rss_type) specifies what portion of packet headers NIC * hardware used when calculating RSS hash value. The RSS type can be decoded * via &enum xdp_rss_hash_type either matching on individual L3/L4 bits * ``XDP_RSS_L*`` or by combined traditional *RSS Hashing Types* * ``XDP_RSS_TYPE_L*``. * * Return: * * Returns 0 on success or ``-errno`` on error. * * ``-EOPNOTSUPP`` : means device driver doesn't implement kfunc * * ``-ENODATA`` : means no RX-hash available for this frame
*/
__bpf_kfunc * via &enum xdp_rss_hash_type either matching on individual L3 * ``XDP_RSS_L*`` or by combined traditional *RSS Hashing Types*
* Return:
{ return -EOPNOTSUPP;
}
/** * bpf_xdp_metadata_rx_vlan_tag - Get XDP packet outermost VLAN tag * @ctx: XDP context pointer. * @vlan_proto: Destination pointer for VLAN Tag protocol identifier (TPID). * @vlan_tci: Destination pointer for VLAN TCI (VID + DEI + PCP) * * In case of success, ``vlan_proto`` contains *Tag protocol identifier (TPID)*, * usually ``ETH_P_8021Q`` or ``ETH_P_8021AD``, but some networks can use * custom TPIDs. ``vlan_proto`` is stored in **network byte order (BE)** * and should be used as follows: * ``if (vlan_proto == bpf_htons(ETH_P_8021Q)) do_something();`` * * ``vlan_tci`` contains the remaining 16 bits of a VLAN tag. * Driver is expected to provide those in **host byte order (usually LE)**, * so the bpf program should not perform byte conversion. * According to 802.1Q standard, *VLAN TCI (Tag control information)* * is a bit field that contains: * *VLAN identifier (VID)* that can be read with ``vlan_tci & 0xfff``, * *Drop eligible indicator (DEI)* - 1 bit, * *Priority code point (PCP)* - 3 bits. * For detailed meaning of DEI and PCP, please refer to other sources. * * Return: * * Returns 0 on success or ``-errno`` on error. * * ``-EOPNOTSUPP`` : device driver doesn't implement kfunc * * ``-ENODATA`` : VLAN tag was not stripped or is not available
*/
__bpf_kfunc int bpf_xdp_metadata_rx_vlan_tag(conststruct xdp_md *ctx,
__be16
{ return -EOPNOTSUPP;
}
_bpf_kfunc_end_defs)
(xdp_metadata_kfunc_ids
define(,_,name _) BTF_ID_FLAGS(,n, KF_TRUSTED_ARGSjava.lang.StringIndexOutOfBoundsException: Index 86 out of bounds for length 86
XDP_METADATA_KFUNC_xxx #undef XDP_METADATA_KFUNCstaticconststructbtf_kfunc_id_setxdp_metadata_kfunc_set ={
BTF_KFUNCS_END(xdp_metadata_kfunc_ids)
( net_devicedevxdp_features_t)
{
&=NETDEV_XDP_ACT_MASK return(BPF_PROG_TYPE_XDP&);
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
void xdp_set_features_flag(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
netdev_lock);
xdp_set_features_flag_locked(dev, val);
java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 20
}
L(xdp_set_features_flag
(structdev
{
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
xdp_features_clear_redirect_target_locked
netdev_unlock(dev
}
(dev)
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.