[dpdk-users] [DPDK memory] mbuf max size is restricted to 65535, how can we buffer bigger than 65535?

[Wu, Jianyue (NSB - CN/Hangzhou)]

Hi, DPDK experts,

Now mbuf data_len is only uint16_t, can't exceed 65535, we have a scenario 
which need to use buffer bigger than 65535, how can we use it? Thanks in 
advance!


#define 
rte_pktmbuf_data_len<https://grok.pscloud.emea.nsn-net.net/s?refs=rte_pktmbuf_data_len&project=UPHWAPI.master>(m<https://grok.pscloud.emea.nsn-net.net/s?refs=m&project=UPHWAPI.master>)
 
((m<https://grok.pscloud.emea.nsn-net.net/s?defs=m&project=UPHWAPI.master>)->data_len<https://grok.pscloud.emea.nsn-net.net/xref/UPHWAPI.master/SCI_Interface_XEON/os/sys-root/x86_64-pc-linux-gnu/usr/include/dpdk/rte_mbuf.h#data_len>)
uint16_t 
data_len<https://doc.dpdk.org/api-2.2/structrte__mbuf.html#ad1a572736a10ff6b282c5f43c4ea1ccf>;
https://doc.dpdk.org/api-2.2/rte__mbuf_8h_source.html

Now mbuf alloc has no problem, can get buffer bigger than 65535.

Best Regards,
Dave(Jianyue)